{"id":108014,"date":"2024-06-06T05:36:27","date_gmt":"2024-06-06T12:36:27","guid":{"rendered":"https:\/\/blogv2prod.wpenginepowered.com\/blog\/?p=108014"},"modified":"2024-07-03T18:51:59","modified_gmt":"2024-07-04T01:51:59","slug":"emi-vs-rfi-a-quick-guide","status":"publish","type":"post","link":"https:\/\/www.carparts.com\/blog\/emi-vs-rfi-a-quick-guide\/","title":{"rendered":"EMI Vs. RFI: A Quick Guide"},"content":{"rendered":"<!DOCTYPE html PUBLIC \"-\/\/W3C\/\/DTD HTML 4.0 Transitional\/\/EN\" \"http:\/\/www.w3.org\/TR\/REC-html40\/loose.dtd\">\n<html><body><span class=\"span-reading-time rt-reading-time\" style=\"display: block;\"><span class=\"rt-label rt-prefix\">Reading Time: <\/span> <span class=\"rt-time\"> 7<\/span> <span class=\"rt-label rt-postfix\">minutes<\/span><\/span><style>.kadence-column_15b6b0-47 > .kt-inside-inner-col{border-top-width:0px;border-right-width:0px;border-bottom-width:0px;border-left-width:0px;}.kadence-column_15b6b0-47 > .kt-inside-inner-col,.kadence-column_15b6b0-47 > .kt-inside-inner-col:before{border-top-left-radius:0px;border-top-right-radius:0px;border-bottom-right-radius:0px;border-bottom-left-radius:0px;}.kadence-column_15b6b0-47 > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column_15b6b0-47 > .kt-inside-inner-col{flex-direction:column;}.kadence-column_15b6b0-47 > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column_15b6b0-47 > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column_15b6b0-47{position:relative;}@media all and (max-width: 1024px){.kadence-column_15b6b0-47 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column_15b6b0-47 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column inner-column-1 kadence-column_15b6b0-47 qk-look-widget\"><div class=\"kt-inside-inner-col\">\n<div class=\"wp-block-ultimate-post-row ultp-block-e17a96  qk-main-wrap\"><div class=\"ultp-row-wrapper\"><div class=\"ultp-row-content\">\n<div class=\"wp-block-ultimate-post-column ultp-block-047db0\"><div class=\"ultp-column-wrapper\"><style>.wp-block-kadence-advancedheading.kt-adv-heading_fe5b4d-01, .wp-block-kadence-advancedheading.kt-adv-heading_fe5b4d-01[data-kb-block=\"kb-adv-heading_fe5b4d-01\"]{text-align:center;font-size:20px;font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-heading_fe5b4d-01 mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading_fe5b4d-01[data-kb-block=\"kb-adv-heading_fe5b4d-01\"] mark.kt-highlight{font-family:Inter;font-weight:500;font-style:normal;color:#f76a0c;-webkit-box-decoration-break:clone;box-decoration-break:clone;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;}.wp-block-kadence-advancedheading.kt-adv-heading_fe5b4d-01 img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-heading_fe5b4d-01[data-kb-block=\"kb-adv-heading_fe5b4d-01\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<div class=\"kt-adv-heading_fe5b4d-01 summary-title wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading_fe5b4d-01\"><span>Summary<\/span><\/div>\n\n\n\n<ul class=\"wp-block-list\"><li>EMI stands for electromagnetic interference, and RFI stands for radio frequency interference.<\/li><li>EMI and RFI can interfere with electrical parts and electronics, including the PCM that runs most processes in your vehicle.<\/li><li>You can control EMI and RFI by installing a ground strap, repairing or replacing damaged spark plug wires, and applying dielectric grease to connections.<\/li><\/ul>\n<\/div><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n\n\n<p>Modern cars feature a wide array of electrical and electronic parts to enhance their performance and your driving experience. However, their increasing dependence on electrical equipment renders them more vulnerable to electrical interference. In particular, EMI and RFI can cause issues with parts like the radio, instrument gauges, and even the powertrain control module. Knowing about EMI and RFI will help you better understand how to protect your vehicle from them.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What Is Electromagnetic Interference?<\/h2>\n\n\n\n<p>EMI stands for electromagnetic interference. The term refers to a disturbance in an electrical circuit or path that disrupts the performance of electronics and electrical equipment.<\/p>\n\n\n\n<p>EMI originates from an electromagnetic field (EMF), an area of invisible energy created by electricity and magnetism. EMFs can be natural or artificial. Natural causes of EMFs include lightning and static electricity. Examples of artificial EMF generators include cell towers, magnets, and radio towers.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What Is Radio Frequency Interference?<\/h2>\n\n\n\n<p>RFI is short for radio frequency interference. It is an electrical disturbance caused by radio waves. Radio waves are a type of electromagnetic wave, making RFI a subset of EMI.<\/p>\n\n\n\n<p>Some people use EMI and RFI interchangeably. However, RFI specifically applies to radio-based electromagnetic interference. While all RFI count as EMI, not all EMI can be considered RFI.<\/p>\n\n\n<style>.kadence-column_0be52c-49 > .kt-inside-inner-col{border-top-width:0px;border-right-width:0px;border-bottom-width:0px;border-left-width:0px;}.kadence-column_0be52c-49 > .kt-inside-inner-col,.kadence-column_0be52c-49 > .kt-inside-inner-col:before{border-top-left-radius:0px;border-top-right-radius:0px;border-bottom-right-radius:0px;border-bottom-left-radius:0px;}.kadence-column_0be52c-49 > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column_0be52c-49 > .kt-inside-inner-col{flex-direction:column;}.kadence-column_0be52c-49 > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column_0be52c-49 > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column_0be52c-49{position:relative;}@media all and (max-width: 1024px){.kadence-column_0be52c-49 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column_0be52c-49 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column inner-column-1 kadence-column_0be52c-49 kb-section-dir-vertical kb-section-sm-dir-vertical pro-tip-widget\"><div class=\"kt-inside-inner-col\"><style>#kt-layout-id_37f489-5a > .kt-row-column-wrap{align-content:start;}:where(#kt-layout-id_37f489-5a > .kt-row-column-wrap) > .wp-block-kadence-column{justify-content:start;}#kt-layout-id_37f489-5a > .kt-row-column-wrap{column-gap:var(--global-kb-gap-none, 0rem );row-gap:var(--global-kb-gap-md, 2rem);padding-top:var( --global-kb-row-default-top, 25px );padding-bottom:var( --global-kb-row-default-bottom, 25px );padding-top:20px;padding-bottom:20px;padding-left:16px;padding-right:32px;grid-template-columns:minmax(0, calc(10% - ((var(--global-kb-gap-none, 0rem ) * 1 )\/2)))minmax(0, calc(90% - ((var(--global-kb-gap-none, 0rem ) * 1 )\/2)));}#kt-layout-id_37f489-5a > .kt-row-layout-overlay{opacity:0.00;}#kt-layout-id_37f489-5a .kt-row-layout-bottom-sep{height:100px;}#kt-layout-id_37f489-5a .kt-row-layout-bottom-sep svg{width:100%;}#kt-layout-id_37f489-5a .kt-row-layout-bottom-sep svg{fill:#ffffff!important;}#kt-layout-id_37f489-5a .kt-row-layout-top-sep{height:100px;}#kt-layout-id_37f489-5a .kt-row-layout-top-sep svg{width:100%;}#kt-layout-id_37f489-5a .kt-row-layout-top-sep svg{fill:#ffffff!important;}@media all and (max-width: 1024px){#kt-layout-id_37f489-5a > .kt-row-column-wrap{grid-template-columns:minmax(0, 1fr) minmax(0, 2fr);}}@media all and (max-width: 1024px){#kt-layout-id_37f489-5a .kt-row-layout-bottom-sep{height:px;}}@media all and (max-width: 1024px){#kt-layout-id_37f489-5a .kt-row-layout-bottom-sep svg{width:%;}}@media all and (max-width: 767px){#kt-layout-id_37f489-5a > .kt-row-column-wrap{padding-top:28px;padding-bottom:25px;padding-left:16px;padding-right:16px;grid-template-columns:minmax(0, 1fr) minmax(0, 2fr);}#kt-layout-id_37f489-5a .kt-row-layout-bottom-sep{height:px;}#kt-layout-id_37f489-5a .kt-row-layout-bottom-sep svg{width:%;}}<\/style>\n<div class=\"wp-block-kadence-rowlayout alignnone pro-tip-wrap\"><div id=\"kt-layout-id_37f489-5a\" class=\"kt-row-layout-inner kt-layout-id_37f489-5a\"><div class=\"kt-row-column-wrap kt-has-2-columns kt-gutter-none kt-v-gutter-default kt-row-valign-top kt-row-layout-right-golden kt-tab-layout-right-golden kt-m-colapse-left-to-right kt-mobile-layout-right-golden  kt-custom-first-width-10  kt-custom-second-width-90\"><style>.kadence-column_2a5dfc-d0 > .kt-inside-inner-col{display:flex;}.kadence-column_2a5dfc-d0 > .kt-inside-inner-col{min-height:45px;border-top-width:0px;border-right-width:0px;border-bottom-width:0px;border-left-width:0px;}.kadence-column_2a5dfc-d0 > .kt-inside-inner-col,.kadence-column_2a5dfc-d0 > .kt-inside-inner-col:before{border-top-left-radius:0px;border-top-right-radius:0px;border-bottom-right-radius:0px;border-bottom-left-radius:0px;}.kadence-column_2a5dfc-d0 > .kt-inside-inner-col{flex-direction:row;flex-wrap:wrap;align-items:center;}.kadence-column_2a5dfc-d0 > .kt-inside-inner-col > *, .kadence-column_2a5dfc-d0 > .kt-inside-inner-col > figure.wp-block-image, .kadence-column_2a5dfc-d0 > .kt-inside-inner-col > figure.wp-block-kadence-image{margin-top:0px;margin-bottom:0px;}.kadence-column_2a5dfc-d0 > .kt-inside-inner-col > .kb-image-is-ratio-size{flex-grow:1;}.kadence-column_2a5dfc-d0 > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column_2a5dfc-d0{position:relative;}@media all and (max-width: 1024px){.kadence-column_2a5dfc-d0 > .kt-inside-inner-col{flex-direction:row;flex-wrap:wrap;align-items:center;}}@media all and (min-width: 768px) and (max-width: 1024px){.kadence-column_2a5dfc-d0 > .kt-inside-inner-col > *, .kadence-column_2a5dfc-d0 > .kt-inside-inner-col > figure.wp-block-image, .kadence-column_2a5dfc-d0 > .kt-inside-inner-col > figure.wp-block-kadence-image{margin-top:0px;margin-bottom:0px;}.kadence-column_2a5dfc-d0 > .kt-inside-inner-col > .kb-image-is-ratio-size{flex-grow:1;}}@media all and (max-width: 767px){.kadence-column_2a5dfc-d0 > .kt-inside-inner-col{flex-direction:row;flex-wrap:wrap;justify-content:flex-start;}.kadence-column_2a5dfc-d0 > .kt-inside-inner-col > *, .kadence-column_2a5dfc-d0 > .kt-inside-inner-col > figure.wp-block-image, .kadence-column_2a5dfc-d0 > .kt-inside-inner-col > figure.wp-block-kadence-image{margin-top:0px;margin-bottom:0px;}.kadence-column_2a5dfc-d0 > .kt-inside-inner-col > .kb-image-is-ratio-size{flex-grow:1;}}<\/style>\n<div class=\"wp-block-kadence-column inner-column-1 kadence-column_2a5dfc-d0 kb-section-dir-horizontal kb-section-md-dir-horizontal pro-tip-item1\"><div class=\"kt-inside-inner-col\"><style>.kb-image_5a393b-62.kb-image-is-ratio-size, .kb-image_5a393b-62 .kb-image-is-ratio-size{max-width:45px;width:100%;}.wp-block-kadence-column > .kt-inside-inner-col > .kb-image_5a393b-62.kb-image-is-ratio-size, .wp-block-kadence-column > .kt-inside-inner-col > .kb-image_5a393b-62 .kb-image-is-ratio-size{align-self:unset;}.kb-image_5a393b-62 figure{max-width:45px;}.kb-image_5a393b-62 .image-is-svg, .kb-image_5a393b-62 .image-is-svg img{width:100%;}.kb-image_5a393b-62 .kb-image-has-overlay:after{opacity:0.3;}<\/style>\n<div class=\"wp-block-kadence-image kb-image_5a393b-62\"><figure class=\"aligncenter size-large\"><img decoding=\"async\" src=\"https:\/\/cld.partsimg.com\/image\/upload\/f_auto,dpr_auto,q_auto,c_pad\/carparts\/blog\/widgets\/protip\/services-icon\" alt=\"\" class=\"kb-img\"><\/figure><\/div>\n<\/div><\/div>\n\n\n<style>.kadence-column_7d67f4-6c > .kt-inside-inner-col{border-top-width:0px;border-right-width:0px;border-bottom-width:0px;border-left-width:0px;}.kadence-column_7d67f4-6c > .kt-inside-inner-col,.kadence-column_7d67f4-6c > .kt-inside-inner-col:before{border-top-left-radius:0px;border-top-right-radius:0px;border-bottom-right-radius:0px;border-bottom-left-radius:0px;}.kadence-column_7d67f4-6c > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column_7d67f4-6c > .kt-inside-inner-col{flex-direction:column;}.kadence-column_7d67f4-6c > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column_7d67f4-6c > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column_7d67f4-6c{position:relative;}@media all and (max-width: 1024px){.kadence-column_7d67f4-6c > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column_7d67f4-6c > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column inner-column-2 kadence-column_7d67f4-6c pro-tip-item2\"><div class=\"kt-inside-inner-col\">\n<div class=\"protip-desc\">\n\t<div class=\"help-tip\">\n\t\t<p><strong>Pro Tips<\/strong> are nuggets of information direct from ASE-certified automobile technicians working with CarParts.com, which may include unique, personal insights based on their years of experience working in the automotive industry. These can help you make more informed decisions about your car.<\/p>\n\t<\/div>\n    <div class=\"help-caption\">\n        <p>\n            <strong>Pro Tip:<\/strong>\nIf an ignition system or an alternator develops problems so that a naked spark is created, that spark will typically create RFI that will be audible in the radio, particularly on the low end of the AM band. There is no MFI in this case, only RFI.\n        <\/p>\n    <\/div>\n<\/div>\n<\/div><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">How Do EMI and RFI Affect Your Car?<\/h2>\n\n\n\n<p>EMI and RFI disrupt the operation of electronic components. Digital gauges and displays might show inaccurate readings, operate erratically, or stop working altogether.<\/p>\n\n\n\n<p>EMF generated by a partially shorted cooling fan motor in a vehicle engine compartment can create EMF that will saturate nearby wire harnesses with induced current that can dreadfully confuse the fuel injection system into doing very strange things. Bad cooling fan motors may pull more current without blowing the fuse and create EMF that will literally cause the engine to stall, misfire intermittently, lose power, etc.<\/p>\n\n\n\n<p>Radios might work intermittently, and you&rsquo;ll hear static in the speakers. In the worst-case scenario, the PCM might malfunction when exposed to intense EMI, leading to severe issues that affect how your vehicle performs on the road.<\/p>\n\n\n\n\n\n\n<h2 class=\"wp-block-heading\">EMI vs. RFI Control<\/h2>\n\n\n\n<p>It might seem impossible to regulate EMI and RFI in your vehicle. After all, many things inside and outside your car or truck generate EMFs. However, there are ways to minimize EMI and RFI in critical car parts, such as the <a href=\"https:\/\/www.carparts.com\/spark-plug\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"spark plugs\">spark plugs<\/a>.<\/p>\n\n\n\n<p>Try the following approaches to improve EMI and RFI control in your vehicle:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Install a Ground Strap<\/h3>\n\n\n\n<p>Adding a <a href=\"https:\/\/www.carparts.com\/ground-strap\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"ground strap\">ground strap<\/a> to your vehicle is one of the easiest ways to prevent EMI. The ground strap is a metal strip that connects the engine with the chassis or negative battery terminal. Usually made of copper brazed with tin, the strap provides a common ground for every electrical part grounded to the engine block.<\/p>\n\n\n\n<p>The ground strap helps prevent EMI by safely directing electrical current into the ground. It prevents the current from reaching places it shouldn&rsquo;t go.<\/p>\n\n\n\n<p>If your vehicle has a ground strap, inspect it regularly. Replace a damaged strap to keep your car or truck grounded<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Install Resistor Spark Plugs (but be advised)<\/h3>\n\n\n\n<p>Spark plugs are a significant source of EMI. When a high-voltage spark leaps from the plug to the combustion chamber, it generates high-frequency electromagnetic waves. The EM waves are strong enough to cause electromagnetic interference in parts far from the spark plugs, such as the PCM and radio.<\/p>\n\n\n\n<p>That being said, resistor plugs aren&rsquo;t a good idea for every modern vehicle. For example, 1997 Explorers with 4.0L SOHC engines came from the factory with resistor spark plugs but the resistor plugs all had to be replaced on those engine platforms under a special program Ford issued because of too many issues with misfires.<\/p>\n\n\n<style>.kadence-column_2e6065-da > .kt-inside-inner-col{border-top-width:0px;border-right-width:0px;border-bottom-width:0px;border-left-width:0px;}.kadence-column_2e6065-da > .kt-inside-inner-col,.kadence-column_2e6065-da > .kt-inside-inner-col:before{border-top-left-radius:0px;border-top-right-radius:0px;border-bottom-right-radius:0px;border-bottom-left-radius:0px;}.kadence-column_2e6065-da > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column_2e6065-da > .kt-inside-inner-col{flex-direction:column;}.kadence-column_2e6065-da > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column_2e6065-da > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column_2e6065-da{position:relative;}@media all and (max-width: 1024px){.kadence-column_2e6065-da > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column_2e6065-da > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column inner-column-1 kadence-column_2e6065-da kb-section-dir-vertical kb-section-sm-dir-vertical pro-tip-widget\"><div class=\"kt-inside-inner-col\"><style>#kt-layout-id_eecac1-b8 > .kt-row-column-wrap{align-content:start;}:where(#kt-layout-id_eecac1-b8 > .kt-row-column-wrap) > .wp-block-kadence-column{justify-content:start;}#kt-layout-id_eecac1-b8 > .kt-row-column-wrap{column-gap:var(--global-kb-gap-none, 0rem );row-gap:var(--global-kb-gap-md, 2rem);padding-top:var( --global-kb-row-default-top, 25px );padding-bottom:var( --global-kb-row-default-bottom, 25px );padding-top:20px;padding-bottom:20px;padding-left:16px;padding-right:32px;grid-template-columns:minmax(0, calc(10% - ((var(--global-kb-gap-none, 0rem ) * 1 )\/2)))minmax(0, calc(90% - ((var(--global-kb-gap-none, 0rem ) * 1 )\/2)));}#kt-layout-id_eecac1-b8 > .kt-row-layout-overlay{opacity:0.00;}#kt-layout-id_eecac1-b8 .kt-row-layout-bottom-sep{height:100px;}#kt-layout-id_eecac1-b8 .kt-row-layout-bottom-sep svg{width:100%;}#kt-layout-id_eecac1-b8 .kt-row-layout-bottom-sep svg{fill:#ffffff!important;}#kt-layout-id_eecac1-b8 .kt-row-layout-top-sep{height:100px;}#kt-layout-id_eecac1-b8 .kt-row-layout-top-sep svg{width:100%;}#kt-layout-id_eecac1-b8 .kt-row-layout-top-sep svg{fill:#ffffff!important;}@media all and (max-width: 1024px){#kt-layout-id_eecac1-b8 > .kt-row-column-wrap{grid-template-columns:minmax(0, 1fr) minmax(0, 2fr);}}@media all and (max-width: 1024px){#kt-layout-id_eecac1-b8 .kt-row-layout-bottom-sep{height:px;}}@media all and (max-width: 1024px){#kt-layout-id_eecac1-b8 .kt-row-layout-bottom-sep svg{width:%;}}@media all and (max-width: 767px){#kt-layout-id_eecac1-b8 > .kt-row-column-wrap{padding-top:28px;padding-bottom:25px;padding-left:16px;padding-right:16px;grid-template-columns:minmax(0, 1fr) minmax(0, 2fr);}#kt-layout-id_eecac1-b8 .kt-row-layout-bottom-sep{height:px;}#kt-layout-id_eecac1-b8 .kt-row-layout-bottom-sep svg{width:%;}}<\/style>\n<div class=\"wp-block-kadence-rowlayout alignnone pro-tip-wrap\"><div id=\"kt-layout-id_eecac1-b8\" class=\"kt-row-layout-inner kt-layout-id_eecac1-b8\"><div class=\"kt-row-column-wrap kt-has-2-columns kt-gutter-none kt-v-gutter-default kt-row-valign-top kt-row-layout-right-golden kt-tab-layout-right-golden kt-m-colapse-left-to-right kt-mobile-layout-right-golden  kt-custom-first-width-10  kt-custom-second-width-90\"><style>.kadence-column_ab7358-67 > .kt-inside-inner-col{display:flex;}.kadence-column_ab7358-67 > .kt-inside-inner-col{min-height:45px;border-top-width:0px;border-right-width:0px;border-bottom-width:0px;border-left-width:0px;}.kadence-column_ab7358-67 > .kt-inside-inner-col,.kadence-column_ab7358-67 > .kt-inside-inner-col:before{border-top-left-radius:0px;border-top-right-radius:0px;border-bottom-right-radius:0px;border-bottom-left-radius:0px;}.kadence-column_ab7358-67 > .kt-inside-inner-col{flex-direction:row;flex-wrap:wrap;align-items:center;}.kadence-column_ab7358-67 > .kt-inside-inner-col > *, .kadence-column_ab7358-67 > .kt-inside-inner-col > figure.wp-block-image, .kadence-column_ab7358-67 > .kt-inside-inner-col > figure.wp-block-kadence-image{margin-top:0px;margin-bottom:0px;}.kadence-column_ab7358-67 > .kt-inside-inner-col > .kb-image-is-ratio-size{flex-grow:1;}.kadence-column_ab7358-67 > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column_ab7358-67{position:relative;}@media all and (max-width: 1024px){.kadence-column_ab7358-67 > .kt-inside-inner-col{flex-direction:row;flex-wrap:wrap;align-items:center;}}@media all and (min-width: 768px) and (max-width: 1024px){.kadence-column_ab7358-67 > .kt-inside-inner-col > *, .kadence-column_ab7358-67 > .kt-inside-inner-col > figure.wp-block-image, .kadence-column_ab7358-67 > .kt-inside-inner-col > figure.wp-block-kadence-image{margin-top:0px;margin-bottom:0px;}.kadence-column_ab7358-67 > .kt-inside-inner-col > .kb-image-is-ratio-size{flex-grow:1;}}@media all and (max-width: 767px){.kadence-column_ab7358-67 > .kt-inside-inner-col{flex-direction:row;flex-wrap:wrap;justify-content:flex-start;}.kadence-column_ab7358-67 > .kt-inside-inner-col > *, .kadence-column_ab7358-67 > .kt-inside-inner-col > figure.wp-block-image, .kadence-column_ab7358-67 > .kt-inside-inner-col > figure.wp-block-kadence-image{margin-top:0px;margin-bottom:0px;}.kadence-column_ab7358-67 > .kt-inside-inner-col > .kb-image-is-ratio-size{flex-grow:1;}}<\/style>\n<div class=\"wp-block-kadence-column inner-column-1 kadence-column_ab7358-67 kb-section-dir-horizontal kb-section-md-dir-horizontal pro-tip-item1\"><div class=\"kt-inside-inner-col\"><style>.kb-image_81aeb3-40.kb-image-is-ratio-size, .kb-image_81aeb3-40 .kb-image-is-ratio-size{max-width:45px;width:100%;}.wp-block-kadence-column > .kt-inside-inner-col > .kb-image_81aeb3-40.kb-image-is-ratio-size, .wp-block-kadence-column > .kt-inside-inner-col > .kb-image_81aeb3-40 .kb-image-is-ratio-size{align-self:unset;}.kb-image_81aeb3-40 figure{max-width:45px;}.kb-image_81aeb3-40 .image-is-svg, .kb-image_81aeb3-40 .image-is-svg img{width:100%;}.kb-image_81aeb3-40 .kb-image-has-overlay:after{opacity:0.3;}<\/style>\n<div class=\"wp-block-kadence-image kb-image_81aeb3-40\"><figure class=\"aligncenter size-large\"><img decoding=\"async\" src=\"https:\/\/cld.partsimg.com\/image\/upload\/f_auto,dpr_auto,q_auto,c_pad\/carparts\/blog\/widgets\/protip\/services-icon\" alt=\"\" class=\"kb-img\"><\/figure><\/div>\n<\/div><\/div>\n\n\n<style>.kadence-column_328868-70 > .kt-inside-inner-col{border-top-width:0px;border-right-width:0px;border-bottom-width:0px;border-left-width:0px;}.kadence-column_328868-70 > .kt-inside-inner-col,.kadence-column_328868-70 > .kt-inside-inner-col:before{border-top-left-radius:0px;border-top-right-radius:0px;border-bottom-right-radius:0px;border-bottom-left-radius:0px;}.kadence-column_328868-70 > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column_328868-70 > .kt-inside-inner-col{flex-direction:column;}.kadence-column_328868-70 > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column_328868-70 > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column_328868-70{position:relative;}@media all and (max-width: 1024px){.kadence-column_328868-70 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column_328868-70 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column inner-column-2 kadence-column_328868-70 pro-tip-item2\"><div class=\"kt-inside-inner-col\">\n<div class=\"protip-desc\">\n\t<div class=\"help-tip\">\n\t\t<p><strong>Pro Tips<\/strong> are nuggets of information direct from ASE-certified automobile technicians working with CarParts.com, which may include unique, personal insights based on their years of experience working in the automotive industry. These can help you make more informed decisions about your car.<\/p>\n\t<\/div>\n    <div class=\"help-caption\">\n        <p>\n            <strong>Pro Tip:<\/strong>\nMost vehicles now come with suppressor plugs because they provide a much hotter spark than resistor plugs. If you have radio noise, the plugs aren&rsquo;t likely to be the cause of it.\n        <\/p>\n    <\/div>\n<\/div>\n<\/div><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2024\/07\/comparison-between-two-distributor-caps-photo-1024x461.jpg\" alt=\"comparison between two distributor caps photo\" class=\"wp-image-109955\" width=\"1024\" height=\"461\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2024\/07\/comparison-between-two-distributor-caps-photo-1024x461.jpg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2024\/07\/comparison-between-two-distributor-caps-photo-300x135.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2024\/07\/comparison-between-two-distributor-caps-photo-768x345.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2024\/07\/comparison-between-two-distributor-caps-photo-150x67.jpg 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2024\/07\/comparison-between-two-distributor-caps-photo.jpg 1525w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption>The photo comparison between these two distributor caps reveals the source of an RFI problem that was causing buzzing static in the radio but only when the engine was running. This carbon button transmits spark to the rotor&rsquo;s spring-loaded tab on a good cap. With it missing on the cap (left side), the naked spark was creating a lot of RFI. | Image Source: Richard McCuistian<\/figcaption><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Spark Plug Wire Repair and Replacement<\/h3>\n\n\n\n<p>Aside from installing resistor spark plugs, you can further reduce EMI by repairing or replacing bad spark plug wires or bad COP coils.<\/p>\n\n\n\n<p>You can even reposition the <a href=\"https:\/\/www.carparts.com\/spark-plug-wire\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"spark plug wires\">spark plug wires<\/a> to increase the distance between them and parts that might accidentally transmit their current and accompanying EMI elsewhere.<\/p>\n\n\n\n<p>Two spark plug wires that are next to each other on the cap and fire adjacent cylinders should be separated in the plug harness loom by other wires. Examples of this would be older Chevy and Ford V8s. The firing order on an older Chevy V8 is 18436572.<\/p>\n\n\n\n<p>Plug wires 5 and 7 are next to each other on the cap and cylinders 5 and 7 also are next to each other on the driver side bank of the engine where the odd numbered (1-3-5-7 on the driver side bank).<\/p>\n\n\n<style>.kadence-column_ea27f5-4c > .kt-inside-inner-col{border-top-width:0px;border-right-width:0px;border-bottom-width:0px;border-left-width:0px;}.kadence-column_ea27f5-4c > .kt-inside-inner-col,.kadence-column_ea27f5-4c > .kt-inside-inner-col:before{border-top-left-radius:0px;border-top-right-radius:0px;border-bottom-right-radius:0px;border-bottom-left-radius:0px;}.kadence-column_ea27f5-4c > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column_ea27f5-4c > .kt-inside-inner-col{flex-direction:column;}.kadence-column_ea27f5-4c > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column_ea27f5-4c > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column_ea27f5-4c{position:relative;}@media all and (max-width: 1024px){.kadence-column_ea27f5-4c > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column_ea27f5-4c > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column inner-column-1 kadence-column_ea27f5-4c kb-section-dir-vertical kb-section-sm-dir-vertical pro-tip-widget\"><div class=\"kt-inside-inner-col\"><style>#kt-layout-id_62adda-ef > .kt-row-column-wrap{align-content:start;}:where(#kt-layout-id_62adda-ef > .kt-row-column-wrap) > .wp-block-kadence-column{justify-content:start;}#kt-layout-id_62adda-ef > .kt-row-column-wrap{column-gap:var(--global-kb-gap-none, 0rem );row-gap:var(--global-kb-gap-md, 2rem);padding-top:var( --global-kb-row-default-top, 25px );padding-bottom:var( --global-kb-row-default-bottom, 25px );padding-top:20px;padding-bottom:20px;padding-left:16px;padding-right:32px;grid-template-columns:minmax(0, calc(10% - ((var(--global-kb-gap-none, 0rem ) * 1 )\/2)))minmax(0, calc(90% - ((var(--global-kb-gap-none, 0rem ) * 1 )\/2)));}#kt-layout-id_62adda-ef > .kt-row-layout-overlay{opacity:0.00;}#kt-layout-id_62adda-ef .kt-row-layout-bottom-sep{height:100px;}#kt-layout-id_62adda-ef .kt-row-layout-bottom-sep svg{width:100%;}#kt-layout-id_62adda-ef .kt-row-layout-bottom-sep svg{fill:#ffffff!important;}#kt-layout-id_62adda-ef .kt-row-layout-top-sep{height:100px;}#kt-layout-id_62adda-ef .kt-row-layout-top-sep svg{width:100%;}#kt-layout-id_62adda-ef .kt-row-layout-top-sep svg{fill:#ffffff!important;}@media all and (max-width: 1024px){#kt-layout-id_62adda-ef > .kt-row-column-wrap{grid-template-columns:minmax(0, 1fr) minmax(0, 2fr);}}@media all and (max-width: 1024px){#kt-layout-id_62adda-ef .kt-row-layout-bottom-sep{height:px;}}@media all and (max-width: 1024px){#kt-layout-id_62adda-ef .kt-row-layout-bottom-sep svg{width:%;}}@media all and (max-width: 767px){#kt-layout-id_62adda-ef > .kt-row-column-wrap{padding-top:28px;padding-bottom:25px;padding-left:16px;padding-right:16px;grid-template-columns:minmax(0, 1fr) minmax(0, 2fr);}#kt-layout-id_62adda-ef .kt-row-layout-bottom-sep{height:px;}#kt-layout-id_62adda-ef .kt-row-layout-bottom-sep svg{width:%;}}<\/style>\n<div class=\"wp-block-kadence-rowlayout alignnone pro-tip-wrap\"><div id=\"kt-layout-id_62adda-ef\" class=\"kt-row-layout-inner kt-layout-id_62adda-ef\"><div class=\"kt-row-column-wrap kt-has-2-columns kt-gutter-none kt-v-gutter-default kt-row-valign-top kt-row-layout-right-golden kt-tab-layout-right-golden kt-m-colapse-left-to-right kt-mobile-layout-right-golden  kt-custom-first-width-10  kt-custom-second-width-90\"><style>.kadence-column_bdb063-b5 > .kt-inside-inner-col{display:flex;}.kadence-column_bdb063-b5 > .kt-inside-inner-col{min-height:45px;border-top-width:0px;border-right-width:0px;border-bottom-width:0px;border-left-width:0px;}.kadence-column_bdb063-b5 > .kt-inside-inner-col,.kadence-column_bdb063-b5 > .kt-inside-inner-col:before{border-top-left-radius:0px;border-top-right-radius:0px;border-bottom-right-radius:0px;border-bottom-left-radius:0px;}.kadence-column_bdb063-b5 > .kt-inside-inner-col{flex-direction:row;flex-wrap:wrap;align-items:center;}.kadence-column_bdb063-b5 > .kt-inside-inner-col > *, .kadence-column_bdb063-b5 > .kt-inside-inner-col > figure.wp-block-image, .kadence-column_bdb063-b5 > .kt-inside-inner-col > figure.wp-block-kadence-image{margin-top:0px;margin-bottom:0px;}.kadence-column_bdb063-b5 > .kt-inside-inner-col > .kb-image-is-ratio-size{flex-grow:1;}.kadence-column_bdb063-b5 > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column_bdb063-b5{position:relative;}@media all and (max-width: 1024px){.kadence-column_bdb063-b5 > .kt-inside-inner-col{flex-direction:row;flex-wrap:wrap;align-items:center;}}@media all and (min-width: 768px) and (max-width: 1024px){.kadence-column_bdb063-b5 > .kt-inside-inner-col > *, .kadence-column_bdb063-b5 > .kt-inside-inner-col > figure.wp-block-image, .kadence-column_bdb063-b5 > .kt-inside-inner-col > figure.wp-block-kadence-image{margin-top:0px;margin-bottom:0px;}.kadence-column_bdb063-b5 > .kt-inside-inner-col > .kb-image-is-ratio-size{flex-grow:1;}}@media all and (max-width: 767px){.kadence-column_bdb063-b5 > .kt-inside-inner-col{flex-direction:row;flex-wrap:wrap;justify-content:flex-start;}.kadence-column_bdb063-b5 > .kt-inside-inner-col > *, .kadence-column_bdb063-b5 > .kt-inside-inner-col > figure.wp-block-image, .kadence-column_bdb063-b5 > .kt-inside-inner-col > figure.wp-block-kadence-image{margin-top:0px;margin-bottom:0px;}.kadence-column_bdb063-b5 > .kt-inside-inner-col > .kb-image-is-ratio-size{flex-grow:1;}}<\/style>\n<div class=\"wp-block-kadence-column inner-column-1 kadence-column_bdb063-b5 kb-section-dir-horizontal kb-section-md-dir-horizontal pro-tip-item1\"><div class=\"kt-inside-inner-col\"><style>.kb-image_655d5e-88.kb-image-is-ratio-size, .kb-image_655d5e-88 .kb-image-is-ratio-size{max-width:45px;width:100%;}.wp-block-kadence-column > .kt-inside-inner-col > .kb-image_655d5e-88.kb-image-is-ratio-size, .wp-block-kadence-column > .kt-inside-inner-col > .kb-image_655d5e-88 .kb-image-is-ratio-size{align-self:unset;}.kb-image_655d5e-88 figure{max-width:45px;}.kb-image_655d5e-88 .image-is-svg, .kb-image_655d5e-88 .image-is-svg img{width:100%;}.kb-image_655d5e-88 .kb-image-has-overlay:after{opacity:0.3;}<\/style>\n<div class=\"wp-block-kadence-image kb-image_655d5e-88\"><figure class=\"aligncenter size-large\"><img decoding=\"async\" src=\"https:\/\/cld.partsimg.com\/image\/upload\/f_auto,dpr_auto,q_auto,c_pad\/carparts\/blog\/widgets\/protip\/services-icon\" alt=\"\" class=\"kb-img\"><\/figure><\/div>\n<\/div><\/div>\n\n\n<style>.kadence-column_f29a15-1b > .kt-inside-inner-col{border-top-width:0px;border-right-width:0px;border-bottom-width:0px;border-left-width:0px;}.kadence-column_f29a15-1b > .kt-inside-inner-col,.kadence-column_f29a15-1b > .kt-inside-inner-col:before{border-top-left-radius:0px;border-top-right-radius:0px;border-bottom-right-radius:0px;border-bottom-left-radius:0px;}.kadence-column_f29a15-1b > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column_f29a15-1b > .kt-inside-inner-col{flex-direction:column;}.kadence-column_f29a15-1b > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column_f29a15-1b > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column_f29a15-1b{position:relative;}@media all and (max-width: 1024px){.kadence-column_f29a15-1b > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column_f29a15-1b > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column inner-column-2 kadence-column_f29a15-1b pro-tip-item2\"><div class=\"kt-inside-inner-col\">\n<div class=\"protip-desc\">\n\t<div class=\"help-tip\">\n\t\t<p><strong>Pro Tips<\/strong> are nuggets of information direct from ASE-certified automobile technicians working with CarParts.com, which may include unique, personal insights based on their years of experience working in the automotive industry. These can help you make more informed decisions about your car.<\/p>\n\t<\/div>\n    <div class=\"help-caption\">\n        <p>\n            <strong>Pro Tip:<\/strong>\nDon&rsquo;t run the wires to those two cylinders right next to each other in the loom or the 5 pulse can induce a pulse in the 7 wire that will fire the #7 plug while the cylinder is still only halfway up and that can cause a nasty ping and eventual engine damage to cylinder 7. The same thing applies on Fords where the firing order is 13726548 (6 and 5 are adjacent on the engine) or 15426378 (7 and 8 are adjacent cylinders on the driver side of Ford V8 engines).\n        <\/p>\n    <\/div>\n<\/div>\n<\/div><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n<p>Spark plug wires carry high-voltage current to the spark plugs. Thick insulation covers the length of each wire, keeping the powerful current in the wire until it reaches the spark plug, but again, one plug wire can induce voltage in adjacent wires, including computer cam and crank sensor wires.<\/p>\n\n\n\n<p>Further, damaged insulation exposes part of the wire, allowing the electric current to escape. When the powerful current jumps out of the wire, its strong magnetic field creates significant EMI.<\/p>\n\n\n\n<p>Each end of the spark plug wire also features a rubber boot that keeps contaminants out of the wire, but when the wire is compromised at its terminal, ozone is created by the naked spark and causes issues with corroding the aluminum terminals at the cap or the coil tower.<\/p>\n\n\n\n<p>If you find warning signs of EMI or RFI, check the spark plug wires for damaged insulation or boots. Afterward, examine the ignition wires and coils. Look for loose connections and damaged insulator jackets that allow electric currents to leak out of the wire or electrical part.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Apply Dielectric Grease<\/h3>\n\n\n\n<p>Are you installing an electrical part or component? Coat its connector with dielectric grease before plugging or screwing it in.<\/p>\n\n\n\n<p>Dielectric grease is a viscous lubricant that keeps water out and insulates against electricity.<\/p>\n\n\n\n<p>A spark plug terminal that is snapped dry (without dielectric grease) onto the plug tower can have micro-sparks that cause RFI. Since dielectric grease is an insulator, it prevents naked sparks by forcing the spark voltage to only travel from the terminal to the plug tower where the metal is actually touching rather than having a lot of little RFI-creating sparks. Dielectric grease also prevents moisture and mitigates the unpleasant &ldquo;vulcanizing&rdquo; of the plug boot against the ceramic of the plug, which makes it very difficult to remove.<\/p>\n\n\n\n<p>Once applied to electrical connections, the grease coating serves as a protective layer against corrosion and contaminants.<\/p>\n\n\n\n<p>A coat of dielectric grease keeps electrical parts and components like battery terminals, lightbulbs, and spark plug boots safe. It seals the connection and keeps moisture and contaminants out of the part. It also lubricates the surfaces of the connections, preventing direct metal-on-metal contact while allowing electric current to flow through it.<\/p>\n\n\n\n<p>Like resistors, dielectric grease also has high resistance. The grease can reduce EMI by decreasing the voltage of the electric current passing through it.<\/p>\n\n\n\n<p>Before applying dielectric grease, ensure the part fits tightly. Otherwise, electricity can still escape through the loose connection.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Add Ferrite Beads to Wiring Harnesses<\/h3>\n\n\n\n<p>Last, you can use ferrite beads to protect individual electrical and electronic parts from EMI and RFI. Ferrite beads are a passive low-pass filter that increases the resistance of the wire to the electric current. The beads either send the high-frequency signals back up the cable or dissipate the electromagnetic energy as heat.&nbsp;<\/p>\n\n\n\n<p>While you cannot eliminate all sources of EMI and RFI in your car, you can keep them within acceptable levels. Carefully check your vehicle&rsquo;s electrical components for any signs of trouble and take the appropriate steps to mitigate electromagnetic disturbance.<\/p>\n<\/body><\/html>\n","protected":false},"excerpt":{"rendered":"<p><span class=\"span-reading-time rt-reading-time\" style=\"display: block;\"><span class=\"rt-label rt-prefix\">Reading Time: <\/span> <span class=\"rt-time\"> 7<\/span> <span class=\"rt-label rt-postfix\">minutes<\/span><\/span>Modern cars feature a wide array of electrical and electronic parts to enhance their performance and your driving experience. However,&#8230; <a href=\"https:\/\/www.carparts.com\/blog\/emi-vs-rfi-a-quick-guide\/\" rel=\"nofollow\">Read More<\/a><\/p>\n","protected":false},"author":4,"featured_media":108117,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","footnotes":""},"categories":[3768],"tags":[],"ppma_author":[2607,2985],"class_list":{"0":"post-108014","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-lifestyle","8":"entry"},"acf":{"adrotate_specific_mobile_ad":"","adrotate_specific_desktop_ad":""},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>EMI Vs. RFI: A Quick Guide - In The Garage with CarParts.com<\/title>\n<meta name=\"description\" content=\"What are electromagnetic interference and radio frequency interference? Here\u2019s a guide on EMI vs. RFI, including tips on preventing them.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.carparts.com\/blog\/emi-vs-rfi-a-quick-guide\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"EMI Vs. RFI: A Quick Guide - In The Garage with CarParts.com\" \/>\n<meta property=\"og:description\" content=\"What are electromagnetic interference and radio frequency interference? Here\u2019s a guide on EMI vs. RFI, including tips on preventing them.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.carparts.com\/blog\/emi-vs-rfi-a-quick-guide\/\" \/>\n<meta property=\"og:site_name\" content=\"In The Garage with CarParts.com\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/carpartscom\" \/>\n<meta property=\"article:published_time\" content=\"2024-06-06T12:36:27+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-07-04T01:51:59+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2024\/06\/emi-vs-rfi-car.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1500\" \/>\n\t<meta property=\"og:image:height\" content=\"1000\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@carpartscom\" \/>\n<meta name=\"twitter:site\" content=\"@carpartscom\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"9 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/emi-vs-rfi-a-quick-guide\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/emi-vs-rfi-a-quick-guide\\\/\"},\"author\":[{\"@type\":\"Person\",\"$id\":\"4\",\"name\":\"CarParts.com Research Team\",\"jobTitle\":\"Expert Automotive Writer\",\"description\":\"The CarParts.com Research Team is composed of experienced automotive and tech writers working with (ASE)-certified automobile technicians and automotive journalists to bring up-to-date, helpful information to car owners in the US. Guided by CarParts.com&#039;s thorough editorial process, our team strives to produce guides and resources DIYers and casual car owners can trust.\",\"knowsAbout\":\"Auto Repair, Car Maintenance, Auto Parts, Car Reviews\",\"publishingPrinciples\":\"\\\/blog\\\/our-team\\\/\",\"url\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/author\\\/thecpteam\\\/\",\"sameAs\":\"https:\\\/\\\/www.facebook.com\\\/carpartscom, https:\\\/\\\/twitter.com\\\/CarPartscom, https:\\\/\\\/www.youtube.com\\\/@CarPartscomOfficial\\\/, https:\\\/\\\/www.instagram.com\\\/carpartscom\\\/\"},{\"@type\":\"Person\",\"$id\":\"4\",\"name\":\"Richard McCuistian\",\"jobTitle\":\"ASE Master Automobile Technician\",\"description\":\"Richard McCuistian has worked for nearly 50 years in the automotive field as a professional technician, an instructor, and a freelance automotive writer for Motor Age, ACtion magazine, Power Stroke Registry, and others. Richard is ASE certified for more than 30 years in 10 categories, including L1 Advanced Engine Performance and Light Vehicle Diesel.\",\"knowsAbout\":\"Auto Repair, Car Maintenance, Auto Parts, Car Reviews\",\"publishingPrinciples\":\"\\\/blog\\\/our-team\\\/\",\"url\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/author\\\/richardmccuistian\\\/\",\"sameAs\":\"https:\\\/\\\/www.linkedin.com\\\/in\\\/richard-mccuistian-2681891b\\\/, https:\\\/\\\/www.youtube.com\\\/user\\\/McCuistian\"}],\"headline\":\"EMI Vs. RFI: A Quick Guide\",\"datePublished\":\"2024-06-06T12:36:27+00:00\",\"dateModified\":\"2024-07-04T01:51:59+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/emi-vs-rfi-a-quick-guide\\\/\"},\"wordCount\":1706,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/emi-vs-rfi-a-quick-guide\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/wp-content\\\/uploads\\\/2024\\\/06\\\/emi-vs-rfi-car.jpg\",\"articleSection\":[\"Lifestyle\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/www.carparts.com\\\/blog\\\/emi-vs-rfi-a-quick-guide\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/emi-vs-rfi-a-quick-guide\\\/\",\"url\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/emi-vs-rfi-a-quick-guide\\\/\",\"name\":\"EMI Vs. RFI: A Quick Guide - In The Garage with CarParts.com\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/emi-vs-rfi-a-quick-guide\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/emi-vs-rfi-a-quick-guide\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/wp-content\\\/uploads\\\/2024\\\/06\\\/emi-vs-rfi-car.jpg\",\"datePublished\":\"2024-06-06T12:36:27+00:00\",\"dateModified\":\"2024-07-04T01:51:59+00:00\",\"description\":\"What are electromagnetic interference and radio frequency interference? Here\u2019s a guide on EMI vs. RFI, including tips on preventing them.\",\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/www.carparts.com\\\/blog\\\/emi-vs-rfi-a-quick-guide\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/emi-vs-rfi-a-quick-guide\\\/#primaryimage\",\"url\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/wp-content\\\/uploads\\\/2024\\\/06\\\/emi-vs-rfi-car.jpg\",\"contentUrl\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/wp-content\\\/uploads\\\/2024\\\/06\\\/emi-vs-rfi-car.jpg\",\"width\":1500,\"height\":1000,\"caption\":\"emi vs rfi car\"},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/#website\",\"url\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/\",\"name\":\"In The Garage with CarParts.com\",\"description\":\"\",\"publisher\":{\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/#organization\",\"name\":\"CarParts.com\",\"url\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/wp-content\\\/uploads\\\/2025\\\/03\\\/cp-itg-logo.png\",\"contentUrl\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/wp-content\\\/uploads\\\/2025\\\/03\\\/cp-itg-logo.png\",\"width\":2048,\"height\":398,\"caption\":\"CarParts.com\"},\"image\":{\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/#\\\/schema\\\/logo\\\/image\\\/\"},\"sameAs\":[\"https:\\\/\\\/www.facebook.com\\\/carpartscom\",\"https:\\\/\\\/x.com\\\/carpartscom\",\"https:\\\/\\\/www.instagram.com\\\/carpartscom\",\"https:\\\/\\\/www.youtube.com\\\/@CarPartscomOfficial\\\/\"]},{\"@type\":\"Person\",\"@id\":\"\",\"url\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/emi-vs-rfi-a-quick-guide\\\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"EMI Vs. RFI: A Quick Guide - In The Garage with CarParts.com","description":"What are electromagnetic interference and radio frequency interference? Here\u2019s a guide on EMI vs. RFI, including tips on preventing them.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.carparts.com\/blog\/emi-vs-rfi-a-quick-guide\/","og_locale":"en_US","og_type":"article","og_title":"EMI Vs. RFI: A Quick Guide - In The Garage with CarParts.com","og_description":"What are electromagnetic interference and radio frequency interference? Here\u2019s a guide on EMI vs. RFI, including tips on preventing them.","og_url":"https:\/\/www.carparts.com\/blog\/emi-vs-rfi-a-quick-guide\/","og_site_name":"In The Garage with CarParts.com","article_publisher":"https:\/\/www.facebook.com\/carpartscom","article_published_time":"2024-06-06T12:36:27+00:00","article_modified_time":"2024-07-04T01:51:59+00:00","og_image":[{"width":1500,"height":1000,"url":"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2024\/06\/emi-vs-rfi-car.jpg","type":"image\/jpeg"}],"twitter_card":"summary_large_image","twitter_creator":"@carpartscom","twitter_site":"@carpartscom","twitter_misc":{"Written by":"","Est. reading time":"9 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.carparts.com\/blog\/emi-vs-rfi-a-quick-guide\/#article","isPartOf":{"@id":"https:\/\/www.carparts.com\/blog\/emi-vs-rfi-a-quick-guide\/"},"author":[{"@type":"Person","$id":"4","name":"CarParts.com Research Team","jobTitle":"Expert Automotive Writer","description":"The CarParts.com Research Team is composed of experienced automotive and tech writers working with (ASE)-certified automobile technicians and automotive journalists to bring up-to-date, helpful information to car owners in the US. Guided by CarParts.com&#039;s thorough editorial process, our team strives to produce guides and resources DIYers and casual car owners can trust.","knowsAbout":"Auto Repair, Car Maintenance, Auto Parts, Car Reviews","publishingPrinciples":"\/blog\/our-team\/","url":"https:\/\/www.carparts.com\/blog\/author\/thecpteam\/","sameAs":"https:\/\/www.facebook.com\/carpartscom, https:\/\/twitter.com\/CarPartscom, https:\/\/www.youtube.com\/@CarPartscomOfficial\/, https:\/\/www.instagram.com\/carpartscom\/"},{"@type":"Person","$id":"4","name":"Richard McCuistian","jobTitle":"ASE Master Automobile Technician","description":"Richard McCuistian has worked for nearly 50 years in the automotive field as a professional technician, an instructor, and a freelance automotive writer for Motor Age, ACtion magazine, Power Stroke Registry, and others. Richard is ASE certified for more than 30 years in 10 categories, including L1 Advanced Engine Performance and Light Vehicle Diesel.","knowsAbout":"Auto Repair, Car Maintenance, Auto Parts, Car Reviews","publishingPrinciples":"\/blog\/our-team\/","url":"https:\/\/www.carparts.com\/blog\/author\/richardmccuistian\/","sameAs":"https:\/\/www.linkedin.com\/in\/richard-mccuistian-2681891b\/, https:\/\/www.youtube.com\/user\/McCuistian"}],"headline":"EMI Vs. RFI: A Quick Guide","datePublished":"2024-06-06T12:36:27+00:00","dateModified":"2024-07-04T01:51:59+00:00","mainEntityOfPage":{"@id":"https:\/\/www.carparts.com\/blog\/emi-vs-rfi-a-quick-guide\/"},"wordCount":1706,"commentCount":0,"publisher":{"@id":"https:\/\/www.carparts.com\/blog\/#organization"},"image":{"@id":"https:\/\/www.carparts.com\/blog\/emi-vs-rfi-a-quick-guide\/#primaryimage"},"thumbnailUrl":"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2024\/06\/emi-vs-rfi-car.jpg","articleSection":["Lifestyle"],"inLanguage":"en-US","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/www.carparts.com\/blog\/emi-vs-rfi-a-quick-guide\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/www.carparts.com\/blog\/emi-vs-rfi-a-quick-guide\/","url":"https:\/\/www.carparts.com\/blog\/emi-vs-rfi-a-quick-guide\/","name":"EMI Vs. RFI: A Quick Guide - In The Garage with CarParts.com","isPartOf":{"@id":"https:\/\/www.carparts.com\/blog\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.carparts.com\/blog\/emi-vs-rfi-a-quick-guide\/#primaryimage"},"image":{"@id":"https:\/\/www.carparts.com\/blog\/emi-vs-rfi-a-quick-guide\/#primaryimage"},"thumbnailUrl":"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2024\/06\/emi-vs-rfi-car.jpg","datePublished":"2024-06-06T12:36:27+00:00","dateModified":"2024-07-04T01:51:59+00:00","description":"What are electromagnetic interference and radio frequency interference? Here\u2019s a guide on EMI vs. RFI, including tips on preventing them.","inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.carparts.com\/blog\/emi-vs-rfi-a-quick-guide\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.carparts.com\/blog\/emi-vs-rfi-a-quick-guide\/#primaryimage","url":"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2024\/06\/emi-vs-rfi-car.jpg","contentUrl":"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2024\/06\/emi-vs-rfi-car.jpg","width":1500,"height":1000,"caption":"emi vs rfi car"},{"@type":"WebSite","@id":"https:\/\/www.carparts.com\/blog\/#website","url":"https:\/\/www.carparts.com\/blog\/","name":"In The Garage with CarParts.com","description":"","publisher":{"@id":"https:\/\/www.carparts.com\/blog\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.carparts.com\/blog\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/www.carparts.com\/blog\/#organization","name":"CarParts.com","url":"https:\/\/www.carparts.com\/blog\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.carparts.com\/blog\/#\/schema\/logo\/image\/","url":"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2025\/03\/cp-itg-logo.png","contentUrl":"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2025\/03\/cp-itg-logo.png","width":2048,"height":398,"caption":"CarParts.com"},"image":{"@id":"https:\/\/www.carparts.com\/blog\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.facebook.com\/carpartscom","https:\/\/x.com\/carpartscom","https:\/\/www.instagram.com\/carpartscom","https:\/\/www.youtube.com\/@CarPartscomOfficial\/"]},{"@type":"Person","@id":"","url":"https:\/\/www.carparts.com\/blog\/emi-vs-rfi-a-quick-guide\/"}]}},"featured_image_src":"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2024\/06\/emi-vs-rfi-car.jpg","featured_image_src_square":"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2024\/06\/emi-vs-rfi-car.jpg","author_info":{"display_name":"","author_link":"https:\/\/www.carparts.com\/blog\/emi-vs-rfi-a-quick-guide\/"},"authors":[{"term_id":2607,"user_id":1651,"is_guest":0,"slug":"thecpteam","display_name":"CarParts.com Research Team","avatar_url":{"url":"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2024\/04\/thecpteam.jpg","url2x":"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2024\/04\/thecpteam.jpg"},"0":null,"1":"","2":"","3":"","4":"","5":"","6":"","7":"","8":""},{"term_id":2985,"user_id":1646,"is_guest":0,"slug":"richardmccuistian","display_name":"Richard McCuistian, ASE Certified Master Automobile Technician","avatar_url":{"url":"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/11\/richard-mccuistian.png","url2x":"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/11\/richard-mccuistian.png"},"0":null,"1":"","2":"","3":"","4":"","5":"","6":"","7":"","8":""}],"_links":{"self":[{"href":"https:\/\/www.carparts.com\/blog\/wp-json\/wp\/v2\/posts\/108014","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.carparts.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.carparts.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.carparts.com\/blog\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/www.carparts.com\/blog\/wp-json\/wp\/v2\/comments?post=108014"}],"version-history":[{"count":0,"href":"https:\/\/www.carparts.com\/blog\/wp-json\/wp\/v2\/posts\/108014\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.carparts.com\/blog\/wp-json\/wp\/v2\/media\/108117"}],"wp:attachment":[{"href":"https:\/\/www.carparts.com\/blog\/wp-json\/wp\/v2\/media?parent=108014"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.carparts.com\/blog\/wp-json\/wp\/v2\/categories?post=108014"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.carparts.com\/blog\/wp-json\/wp\/v2\/tags?post=108014"},{"taxonomy":"author","embeddable":true,"href":"https:\/\/www.carparts.com\/blog\/wp-json\/wp\/v2\/ppma_author?post=108014"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}