{"id":102565,"date":"2024-03-04T23:53:06","date_gmt":"2024-03-05T07:53:06","guid":{"rendered":"https:\/\/blogv2prod.wpenginepowered.com\/blog\/?p=102565"},"modified":"2024-10-24T11:35:10","modified_gmt":"2024-10-24T18:35:10","slug":"tips-for-replacing-the-engine-coolant-temperature-sensor","status":"publish","type":"post","link":"https:\/\/www.carparts.com\/blog\/tips-for-replacing-the-engine-coolant-temperature-sensor\/","title":{"rendered":"Tips For Replacing the Engine Coolant Temperature Sensor"},"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-column102565_fc78c3-bf > .kt-inside-inner-col,.kadence-column102565_fc78c3-bf > .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-column102565_fc78c3-bf > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column102565_fc78c3-bf > .kt-inside-inner-col{flex-direction:column;}.kadence-column102565_fc78c3-bf > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column102565_fc78c3-bf > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column102565_fc78c3-bf{position:relative;}@media all and (max-width: 1024px){.kadence-column102565_fc78c3-bf > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column102565_fc78c3-bf > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column102565_fc78c3-bf inner-column-1 qk-look-widget\"><div class=\"kt-inside-inner-col\">\n<div class=\"wp-block-ultimate-post-row ultp-block-cb0be0  qk-main-wrap\"><div class=\"ultp-row-wrapper\"><div class=\"ultp-row-content\">\n<div class=\"wp-block-ultimate-post-column ultp-block-a713f4\"><div class=\"ultp-column-wrapper\"><style>.wp-block-kadence-advancedheading.kt-adv-heading102565_f0cba1-c9, .wp-block-kadence-advancedheading.kt-adv-heading102565_f0cba1-c9[data-kb-block=\"kb-adv-heading102565_f0cba1-c9\"]{text-align:center;font-size:20px;font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-heading102565_f0cba1-c9 mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading102565_f0cba1-c9[data-kb-block=\"kb-adv-heading102565_f0cba1-c9\"] 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-heading102565_f0cba1-c9 img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-heading102565_f0cba1-c9[data-kb-block=\"kb-adv-heading102565_f0cba1-c9\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<div class=\"kt-adv-heading102565_f0cba1-c9 summary-title wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading102565_f0cba1-c9\"><span>Summary<\/span><\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li>You should prepare the right tools, let the engine cool, and wear the correct safety equipment before replacing the engine coolant temperature sensor.<\/li>\n\n\n\n<li>Coolant sensors are installed like spark plugs, which means they need to be carefully unscrewed in a counterclockwise direction using a deep socket and ratchet.<\/li>\n\n\n\n<li>It&rsquo;s advisable to clean the sensor&rsquo;s connector before plugging it in. The connector should snap onto the sensor, ensuring a good connection.<\/li>\n<\/ul>\n<\/div><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n\n\n<p>Just like many vehicle sensors, the engine <a href=\"https:\/\/www.carparts.com\/coolant-temperature-sensor\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"coolant temperature sensor\">coolant temperature sensor<\/a> can eventually wear out, which can cause it to send incorrect temperature data or fail. When this happens, your vehicle may or may not show an illuminated check engine light but will most certainly exhibit some symptoms. An &ldquo;in range&rdquo; failure of the engine coolant temperature (ECT) sensor won&rsquo;t set a code.<\/p>\n\n\n\n<p>If you determine that the ECT sensor is giving a skewed reading, replace the sensor so that the powertrain control module (PCM) can monitor coolant temperature properly.<\/p>\n\n\n<style>.kadence-column102565_c5cf01-38 > .kt-inside-inner-col,.kadence-column102565_c5cf01-38 > .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-column102565_c5cf01-38 > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column102565_c5cf01-38 > .kt-inside-inner-col{flex-direction:column;}.kadence-column102565_c5cf01-38 > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column102565_c5cf01-38 > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column102565_c5cf01-38{position:relative;}@media all and (max-width: 1024px){.kadence-column102565_c5cf01-38 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column102565_c5cf01-38 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column102565_c5cf01-38 kb-section-dir-vertical kb-section-sm-dir-vertical inner-column-1 pro-tip-widget\"><div class=\"kt-inside-inner-col\"><style>.kb-row-layout-id102565_0f4b32-f7 > .kt-row-column-wrap{align-content:start;}:where(.kb-row-layout-id102565_0f4b32-f7 > .kt-row-column-wrap) > .wp-block-kadence-column{justify-content:start;}.kb-row-layout-id102565_0f4b32-f7 > .kt-row-column-wrap{column-gap:var(--global-kb-gap-none, 0rem );row-gap:var(--global-kb-gap-md, 2rem);padding-top:20px;padding-right:32px;padding-bottom:20px;padding-left:16px;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)));}.kb-row-layout-id102565_0f4b32-f7 > .kt-row-layout-overlay{opacity:0.00;}.kb-row-layout-id102565_0f4b32-f7 .kt-row-layout-bottom-sep{height:100px;}.kb-row-layout-id102565_0f4b32-f7 .kt-row-layout-bottom-sep svg{width:100%;}.kb-row-layout-id102565_0f4b32-f7 .kt-row-layout-bottom-sep svg{fill:#ffffff!important;}.kb-row-layout-id102565_0f4b32-f7 .kt-row-layout-top-sep{height:100px;}.kb-row-layout-id102565_0f4b32-f7 .kt-row-layout-top-sep svg{width:100%;}.kb-row-layout-id102565_0f4b32-f7 .kt-row-layout-top-sep svg{fill:#ffffff!important;}@media all and (max-width: 1024px){.kb-row-layout-id102565_0f4b32-f7 > .kt-row-column-wrap{grid-template-columns:minmax(0, 1fr) minmax(0, 2fr);}}@media all and (max-width: 1024px){.kb-row-layout-id102565_0f4b32-f7 .kt-row-layout-bottom-sep{height:px;}}@media all and (max-width: 1024px){.kb-row-layout-id102565_0f4b32-f7 .kt-row-layout-bottom-sep svg{width:%;}}@media all and (max-width: 767px){.kb-row-layout-id102565_0f4b32-f7 > .kt-row-column-wrap{padding-top:28px;padding-right:16px;padding-bottom:25px;padding-left:16px;grid-template-columns:minmax(0, 1fr) minmax(0, 2fr);}.kb-row-layout-id102565_0f4b32-f7 .kt-row-layout-bottom-sep{height:px;}.kb-row-layout-id102565_0f4b32-f7 .kt-row-layout-bottom-sep svg{width:%;}}<\/style><div class=\"kb-row-layout-wrap kb-row-layout-id102565_0f4b32-f7 alignnone pro-tip-wrap wp-block-kadence-rowlayout\"><div class=\"kt-row-column-wrap kt-has-2-columns kt-row-layout-right-golden kt-tab-layout-right-golden kt-mobile-layout-right-golden kt-row-valign-top\">\n<style>.kadence-column102565_787a42-2e > .kt-inside-inner-col{display:flex;}.kadence-column102565_787a42-2e > .kt-inside-inner-col{min-height:45px;}.kadence-column102565_787a42-2e > .kt-inside-inner-col,.kadence-column102565_787a42-2e > .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-column102565_787a42-2e > .kt-inside-inner-col{row-gap:0px;column-gap:0px;}.kadence-column102565_787a42-2e > .kt-inside-inner-col{flex-direction:row;flex-wrap:wrap;align-items:center;}.kadence-column102565_787a42-2e > .kt-inside-inner-col > *, .kadence-column102565_787a42-2e > .kt-inside-inner-col > figure.wp-block-image, .kadence-column102565_787a42-2e > .kt-inside-inner-col > figure.wp-block-kadence-image{margin-top:0px;margin-bottom:0px;}.kadence-column102565_787a42-2e > .kt-inside-inner-col > .kb-image-is-ratio-size{flex-grow:1;}.kadence-column102565_787a42-2e > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column102565_787a42-2e{position:relative;}@media all and (max-width: 1024px){.kadence-column102565_787a42-2e > .kt-inside-inner-col{flex-direction:row;flex-wrap:wrap;align-items:center;}}@media all and (min-width: 768px) and (max-width: 1024px){.kadence-column102565_787a42-2e > .kt-inside-inner-col > *, .kadence-column102565_787a42-2e > .kt-inside-inner-col > figure.wp-block-image, .kadence-column102565_787a42-2e > .kt-inside-inner-col > figure.wp-block-kadence-image{margin-top:0px;margin-bottom:0px;}.kadence-column102565_787a42-2e > .kt-inside-inner-col > .kb-image-is-ratio-size{flex-grow:1;}}@media all and (max-width: 767px){.kadence-column102565_787a42-2e > .kt-inside-inner-col{flex-direction:row;flex-wrap:wrap;justify-content:flex-start;}.kadence-column102565_787a42-2e > .kt-inside-inner-col > *, .kadence-column102565_787a42-2e > .kt-inside-inner-col > figure.wp-block-image, .kadence-column102565_787a42-2e > .kt-inside-inner-col > figure.wp-block-kadence-image{margin-top:0px;margin-bottom:0px;}.kadence-column102565_787a42-2e > .kt-inside-inner-col > .kb-image-is-ratio-size{flex-grow:1;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column102565_787a42-2e kb-section-dir-horizontal kb-section-md-dir-horizontal inner-column-1 pro-tip-item1\"><div class=\"kt-inside-inner-col\"><style>.kb-image102565_894233-b1.kb-image-is-ratio-size, .kb-image102565_894233-b1 .kb-image-is-ratio-size{max-width:45px;width:100%;}.wp-block-kadence-column > .kt-inside-inner-col > .kb-image102565_894233-b1.kb-image-is-ratio-size, .wp-block-kadence-column > .kt-inside-inner-col > .kb-image102565_894233-b1 .kb-image-is-ratio-size{align-self:unset;}.kb-image102565_894233-b1 figure{max-width:45px;}.kb-image102565_894233-b1 .image-is-svg, .kb-image102565_894233-b1 .image-is-svg img{width:100%;}.kb-image102565_894233-b1 .kb-image-has-overlay:after{opacity:0.3;}<\/style>\n<div class=\"wp-block-kadence-image kb-image102565_894233-b1\"><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-column102565_ba277f-ed > .kt-inside-inner-col,.kadence-column102565_ba277f-ed > .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-column102565_ba277f-ed > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column102565_ba277f-ed > .kt-inside-inner-col{flex-direction:column;}.kadence-column102565_ba277f-ed > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column102565_ba277f-ed > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column102565_ba277f-ed{position:relative;}@media all and (max-width: 1024px){.kadence-column102565_ba277f-ed > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column102565_ba277f-ed > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column102565_ba277f-ed inner-column-2 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>\n            A quick way to check the ECT for accuracy is to let the vehicle sit overnight and check with a scan tool to see if the ECT is reading the same as the intake air temperature and transmission oil temperature sensors. After several hours, all three sensors should read very near the prevailing ambient temperature. If one is far out of line with the other two in its reading, that sensor is suspect.\n        <\/p>\n    <\/div>\n<\/div>\n<\/div><\/div>\n\n<\/div><\/div><\/div><\/div>\n\n\n\n<p>Modern engines have an ideal operating temperature range of 190 to 225 degrees Fahrenheit. Since the engine coolant temperature is essentially a measure of engine temperature, a faulty sensor will prevent the PCM from monitoring engine temperature. An engine operating outside of its ideal temperature range can produce less power, burn more fuel, and create more emissions. Not to mention the fact that, if the sensor fails in range, the electric cooling fan may not come online when it needs to. But if the ECT totally fails, the fan will usually run by default as a fail safe.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>If the ECT sensor fails to have an ideal operating temperature range of 190 to 225 degrees Fahrenheit, the electric cooling fan may not come online when it needs to. But if the ECT totally fails, the fan will usually run by default as a fail<strong>&ndash;<\/strong>safe<strong>.<\/strong><\/p>\n<cite>&ndash;<a href=\"https:\/\/www.carparts.com\/blog\/author\/richardmccuistian\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Richard McCuistian, ASE Certified Master Automobile Technician\">Richard McCuistian, ASE Certified Master Automobile Technician<\/a><\/cite><\/blockquote>\n\n\n\n<p>Replacing a coolant temperature sensor is a fairly manageable task for a DIY mechanic. Here are some general tips and tricks that you should take note of when it comes to <a href=\"https:\/\/www.carparts.com\/blog\/engine-coolant-temperature-sensor-purpose-location-and-failure-signs\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"engine coolant temperature (ECT) sensor\">engine coolant temperature (ECT) sensor<\/a> replacement.<\/p>\n\n\n\n<p><em><strong>Note:<\/strong> Make sure you know where the sensor is before you start.<\/em><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">ECT Sensor Replacement Tips<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Preparing the Right Tools<\/h3>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"768\" height=\"1024\" src=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2024\/03\/ford-explorer-ect-sensor-768x1024.jpg\" alt=\"image of a ford explorer ect sensor\" class=\"wp-image-103944\" style=\"width:768px;height:1024px\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2024\/03\/ford-explorer-ect-sensor-768x1024.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2024\/03\/ford-explorer-ect-sensor-225x300.jpg 225w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2024\/03\/ford-explorer-ect-sensor-640x853.jpg 640w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2024\/03\/ford-explorer-ect-sensor-150x200.jpg 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2024\/03\/ford-explorer-ect-sensor.jpg 1125w\" sizes=\"(max-width: 768px) 100vw, 768px\"><figcaption class=\"wp-element-caption\">Some ECT sensors are very easy to get to and require only the tool that removes the sensor. Usually this will be a wrench or a socket, but there are exceptions to this rule, too. Not all ECT sensors screw in. This Explorer 4.0L SOHC ECT sensor is right on the top and mounted in the thermostat housing with a clip and an o-ring. | Image Source: Richard McCuistian<\/figcaption><\/figure>\n\n\n\n<p>On some engine platforms, you may need several tools to replace the engine coolant temperature sensor, as you&rsquo;ll need to remove several engine components to get access to the sensor.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Let the Engine Cool<\/h3>\n\n\n\n<p>Never open a hot cooling system or remove the ECT sensor without letting the engine cool first.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Consider Disconnecting the Battery<\/h3>\n\n\n\n<p>To safely replace the engine coolant temperature sensor, you can start by disconnecting the negative terminal of the <a href=\"https:\/\/www.carparts.com\/battery\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"car battery\">car battery<\/a>. Note, however, that most mechanics don&rsquo;t do this when they&rsquo;re simply replacing a sensor. So if you decide not to disconnect the battery before replacing the ECT, it&rsquo;s not a big deal.<\/p>\n\n\n<style>.kadence-column102565_78b0ca-74 > .kt-inside-inner-col,.kadence-column102565_78b0ca-74 > .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-column102565_78b0ca-74 > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column102565_78b0ca-74 > .kt-inside-inner-col{flex-direction:column;}.kadence-column102565_78b0ca-74 > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column102565_78b0ca-74 > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column102565_78b0ca-74{position:relative;}@media all and (max-width: 1024px){.kadence-column102565_78b0ca-74 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column102565_78b0ca-74 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column102565_78b0ca-74 kb-section-dir-vertical kb-section-sm-dir-vertical inner-column-1 pro-tip-widget\"><div class=\"kt-inside-inner-col\"><style>.kb-row-layout-id102565_0ba8f4-c4 > .kt-row-column-wrap{align-content:start;}:where(.kb-row-layout-id102565_0ba8f4-c4 > .kt-row-column-wrap) > .wp-block-kadence-column{justify-content:start;}.kb-row-layout-id102565_0ba8f4-c4 > .kt-row-column-wrap{column-gap:var(--global-kb-gap-none, 0rem );row-gap:var(--global-kb-gap-md, 2rem);padding-top:20px;padding-right:32px;padding-bottom:20px;padding-left:16px;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)));}.kb-row-layout-id102565_0ba8f4-c4 > .kt-row-layout-overlay{opacity:0.00;}.kb-row-layout-id102565_0ba8f4-c4 .kt-row-layout-bottom-sep{height:100px;}.kb-row-layout-id102565_0ba8f4-c4 .kt-row-layout-bottom-sep svg{width:100%;}.kb-row-layout-id102565_0ba8f4-c4 .kt-row-layout-bottom-sep svg{fill:#ffffff!important;}.kb-row-layout-id102565_0ba8f4-c4 .kt-row-layout-top-sep{height:100px;}.kb-row-layout-id102565_0ba8f4-c4 .kt-row-layout-top-sep svg{width:100%;}.kb-row-layout-id102565_0ba8f4-c4 .kt-row-layout-top-sep svg{fill:#ffffff!important;}@media all and (max-width: 1024px){.kb-row-layout-id102565_0ba8f4-c4 > .kt-row-column-wrap{grid-template-columns:minmax(0, 1fr) minmax(0, 2fr);}}@media all and (max-width: 1024px){.kb-row-layout-id102565_0ba8f4-c4 .kt-row-layout-bottom-sep{height:px;}}@media all and (max-width: 1024px){.kb-row-layout-id102565_0ba8f4-c4 .kt-row-layout-bottom-sep svg{width:%;}}@media all and (max-width: 767px){.kb-row-layout-id102565_0ba8f4-c4 > .kt-row-column-wrap{padding-top:28px;padding-right:16px;padding-bottom:25px;padding-left:16px;grid-template-columns:minmax(0, 1fr) 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.kt-inside-inner-col{flex-direction:row;flex-wrap:wrap;align-items:center;}.kadence-column102565_4d2cc9-7d > .kt-inside-inner-col > *, .kadence-column102565_4d2cc9-7d > .kt-inside-inner-col > figure.wp-block-image, .kadence-column102565_4d2cc9-7d > .kt-inside-inner-col > figure.wp-block-kadence-image{margin-top:0px;margin-bottom:0px;}.kadence-column102565_4d2cc9-7d > .kt-inside-inner-col > .kb-image-is-ratio-size{flex-grow:1;}.kadence-column102565_4d2cc9-7d > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column102565_4d2cc9-7d{position:relative;}@media all and (max-width: 1024px){.kadence-column102565_4d2cc9-7d > .kt-inside-inner-col{flex-direction:row;flex-wrap:wrap;align-items:center;}}@media all and (min-width: 768px) and (max-width: 1024px){.kadence-column102565_4d2cc9-7d > .kt-inside-inner-col > *, .kadence-column102565_4d2cc9-7d > .kt-inside-inner-col > figure.wp-block-image, .kadence-column102565_4d2cc9-7d > .kt-inside-inner-col > figure.wp-block-kadence-image{margin-top:0px;margin-bottom:0px;}.kadence-column102565_4d2cc9-7d > .kt-inside-inner-col > .kb-image-is-ratio-size{flex-grow:1;}}@media all and (max-width: 767px){.kadence-column102565_4d2cc9-7d > .kt-inside-inner-col{flex-direction:row;flex-wrap:wrap;justify-content:flex-start;}.kadence-column102565_4d2cc9-7d > .kt-inside-inner-col > *, .kadence-column102565_4d2cc9-7d > .kt-inside-inner-col > figure.wp-block-image, .kadence-column102565_4d2cc9-7d > .kt-inside-inner-col > figure.wp-block-kadence-image{margin-top:0px;margin-bottom:0px;}.kadence-column102565_4d2cc9-7d > .kt-inside-inner-col > .kb-image-is-ratio-size{flex-grow:1;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column102565_4d2cc9-7d kb-section-dir-horizontal kb-section-md-dir-horizontal inner-column-1 pro-tip-item1\"><div class=\"kt-inside-inner-col\"><style>.kb-image102565_4b1285-08.kb-image-is-ratio-size, .kb-image102565_4b1285-08 .kb-image-is-ratio-size{max-width:45px;width:100%;}.wp-block-kadence-column > .kt-inside-inner-col > .kb-image102565_4b1285-08.kb-image-is-ratio-size, .wp-block-kadence-column > .kt-inside-inner-col > .kb-image102565_4b1285-08 .kb-image-is-ratio-size{align-self:unset;}.kb-image102565_4b1285-08 figure{max-width:45px;}.kb-image102565_4b1285-08 .image-is-svg, .kb-image102565_4b1285-08 .image-is-svg img{width:100%;}.kb-image102565_4b1285-08 .kb-image-has-overlay:after{opacity:0.3;}<\/style>\n<div class=\"wp-block-kadence-image kb-image102565_4b1285-08\"><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-column102565_c41a89-3c > .kt-inside-inner-col,.kadence-column102565_c41a89-3c > .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-column102565_c41a89-3c > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column102565_c41a89-3c > .kt-inside-inner-col{flex-direction:column;}.kadence-column102565_c41a89-3c > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column102565_c41a89-3c > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column102565_c41a89-3c{position:relative;}@media all and (max-width: 1024px){.kadence-column102565_c41a89-3c > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column102565_c41a89-3c > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column102565_c41a89-3c inner-column-2 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>\n            The PCM\/ECM only sends about 4.6 volts to the sensor when the key is on and almost no current at all. When the key is off, the ECT circuit is totally dark.\n        <\/p>\n    <\/div>\n<\/div>\n<\/div><\/div>\n\n<\/div><\/div><\/div><\/div>\n\n\n\n<h3 class=\"wp-block-heading\">Wear Safety Equipment<\/h3>\n\n\n\n<p>Remember that coolant can stay hot for a couple of hours after use. Since you&rsquo;ll be working in the area where coolant passes, you might want to wear gloves and goggles. The last thing you want is to get burns because of hot coolant dripping onto your skin or splashing onto your face.<\/p>\n\n\n\n<p><em><strong>Note:<\/strong> It&rsquo;s always good to wear eye protection, but if you have let the car cool as you should have, there won&rsquo;t be any hot coolant.<\/em><\/p>\n\n\n\n<div id=\"article-search-widget\">\n<div class=\"cp-search\">\n<div align=\"center\">\n<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/cld.partsimg.com\/image\/upload\/w_auto,dpr_auto\/carparts\/logos\/badge_wordmark\/full_color\/CP_LOGO_COLOUR_RGB\" alt=\"CarParts.com\" width=\"300\" height=\"56\">\n<\/div>\n<form id=\"cpsearchform\" name=\"cpsearchform\" action=\"https:\/\/www.carparts.com\/search\" method=\"get\" target=\"_blank\" accept-charset=\"character_set\" aria-label=\"search CarParts.com\">\n    <input type=\"text\" class=\"keyword\" name=\"q\" placeholder=\"Search for parts on CarParts.com\" value=\"\" aria-label=\"Search CarParts.com\"><input type=\"submit\" class=\"btn-search\" value=\"Search\" aria-label=\"Search\">\n<\/form>\n<\/div>\n<\/div>\n\n\n\n<h3 class=\"wp-block-heading\">Locating the Engine Coolant Temperature Sensor<\/h3>\n\n\n\n<p>The engine coolant temperature sensor is usually found near the radiator or thermostat housing, which is in front of the engine. Some engines have cylinder head temperature sensors and these may be more difficult to access. If you don&rsquo;t know where the ECT sensor is, don&rsquo;t do anything until you find out. Usually you can find that information online somewhere for your vehicle, so keep your phone handy.<\/p>\n\n\n\n<p>If you&rsquo;re not sure where it is, you can refer to a repair manual, which might have illustrations to help you. You might need to use a flashlight to find this small sensor, as it&rsquo;s usually located deep inside the engine bay.&nbsp;<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Removing the Engine Cover<\/h3>\n\n\n\n<p>If your vehicle&rsquo;s engine has a bulky engine cover, then you might need to remove it. But If the ECT isn&rsquo;t under the engine cover, you won&rsquo;t have to remove the cover, so it also depends on the vehicle.<\/p>\n\n\n\n<p>In some cases if the engine cover needs to be removed, you may also need to use a wrench to remove the nuts and bolts that secure it.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Consider Draining Coolant<\/h3>\n\n\n\n<p>Some people <a href=\"https:\/\/www.carparts.com\/blog\/how-often-to-flush-coolant-and-other-faqs\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"drain the coolant\">drain the coolant<\/a> from the engine&rsquo;s cooling system to prevent coolant from gushing out once the coolant temperature sensor is removed.<\/p>\n\n\n\n<p>However, if the ECT is high in the system (like on the Explorer mentioned earlier) you should not drain the cooling system. You don&rsquo;t really need to do this kind of work unless the sensor is mounted in a place that will let coolant gurgle out. If you&rsquo;re swift, you might be able to yank the old sensor out and pop the new one in before you lose much coolant. Have a drain pan ready and be prepared to refill the system if you bobble the sensor and lots of coolant escapes.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Disconnecting the Sensor Wiring Connector<\/h3>\n\n\n\n<p>You need to be careful when disconnecting the wiring connector from the sensor. Sometimes, plastic connectors will break or their retaining clips won&rsquo;t latch or unlatch properly, so you may need to get a new connector if the vehicle is very old.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Use the Right Tool<\/h3>\n\n\n\n<p>Most coolant sensors are installed sort of like <a href=\"https:\/\/www.carparts.com\/spark-plug\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"spark plugs\">spark plugs<\/a>, which means they&rsquo;re unscrewed in a counterclockwise direction using a deep socket and ratchet. You can also use a plain old wrench, but make sure you use the right size.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Cleaning the Threads<\/h3>\n\n\n\n<p>Before installing the new sensor, clean the threads with a rag or cloth to remove any debris that might affect the sensor&rsquo;s function. But a two-wire sensor isn&rsquo;t grounded through the threads like a one-wire sensor. Mainly, you just don&rsquo;t want coolant leaking after you screw the sensor in.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Installing the New Sensor<\/h3>\n\n\n\n<p>Be careful when screwing in a new sensor. Hand-twist the sensor and make sure that the threads are properly aligned. Use a torque wrench to tighten it to the manufacturer&rsquo;s specified torque specification. This should be indicated in the vehicle&rsquo;s owner&rsquo;s manual.<\/p>\n\n\n\n<p>Note, however, that if the sensor has pipe thread (tapered), there won&rsquo;t be a torque specification, but you don&rsquo;t need to overtighten it either. With tapered pipe thread, you&rsquo;ll see some threads still showing when it&rsquo;s tight enough.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Reconnecting the Wiring Harness<\/h3>\n\n\n\n<p>It&rsquo;s advisable to clean the sensor&rsquo;s connector before plugging it in. Inspect it to see if it has terminal corrosion or damage and if it does, replace the connector. The connector should snap onto the sensor and latch.<\/p>\n\n\n\n<p>After this is done, it&rsquo;s all a matter of refilling your <a href=\"https:\/\/www.carparts.com\/blog\/a-short-course-on-cooling-systems\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"cooling system\">cooling system<\/a> with coolant (if you chose to drain it), reconnecting the battery (if you chose to disconnect it), and checking for leaks around the new sensor. Assuming you&rsquo;ve done the procedure correctly, your vehicle&rsquo;s PCM should receive the correct temperature information and run the engine properly.<\/p>\n\n\n\n<p>If you still have the same symptom or problems you&rsquo;ll need to return to square one. You misfired on your diagnosis and something else is wrong. That&rsquo;s just the way the ball bounces some days.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">How to Get a Quality Replacement Coolant Temperature Sensor<\/h2>\n\n\n\n<p>A faulty coolant temperature sensor will prevent your vehicle&rsquo;s PCM from accurately monitoring the engine temperature. The engine won&rsquo;t run very well as a result. It&rsquo;s best to replace the bad coolant temperature sensor as soon as possible. To get your new coolant temperature sensor quickly, order from CarParts.com.<\/p>\n\n\n\n<p>CarParts.com values convenience and customer experience. It takes only a few quick clicks to proceed through our secure and convenient checkout. And if you order from anywhere within the continental US before 12 PM ET, we&rsquo;ll ship your new parts straight to your door in as fast as two business days. This ensures you&rsquo;ll have your new temperature sensor on hand and ready for a trusted mechanic to install in no time.<\/p>\n\n\n\n<p>Don&rsquo;t keep a defective sensor connected to your PCM, or it&rsquo;ll cost your engine in the long run. Purchase a new <a href=\"https:\/\/www.carparts.com\/coolant-temperature-sensor\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"coolant temperature sensor\">coolant temperature sensor<\/a> today from CarParts.com.<\/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>Just like many vehicle sensors, the engine coolant temperature sensor can eventually wear out, which can cause it to send&#8230; <a href=\"https:\/\/www.carparts.com\/blog\/tips-for-replacing-the-engine-coolant-temperature-sensor\/\" rel=\"nofollow\">Read More<\/a><\/p>\n","protected":false},"author":4,"featured_media":102723,"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":[3753,52],"tags":[1252],"ppma_author":[2607,2985],"class_list":{"0":"post-102565","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-cooling-system","8":"category-diy","9":"tag-coolant-temperature-sensor","10":"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>Tips For Replacing the Engine Coolant Temperature Sensor - In The Garage with CarParts.com<\/title>\n<meta name=\"description\" content=\"Replacing an engine coolant temperature sensor is a straightforward process. Know these tips and tricks for a proper repair. Read more.\" \/>\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\/tips-for-replacing-the-engine-coolant-temperature-sensor\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Tips For Replacing the Engine Coolant Temperature Sensor - In The Garage with CarParts.com\" \/>\n<meta property=\"og:description\" content=\"Replacing an engine coolant temperature sensor is a straightforward process. Know these tips and tricks for a proper repair. Read more.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.carparts.com\/blog\/tips-for-replacing-the-engine-coolant-temperature-sensor\/\" \/>\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=\"2024-03-05T07:53:06+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-10-24T18:35:10+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2024\/02\/car-engine-coolant-temp-sensor.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=\"8 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/tips-for-replacing-the-engine-coolant-temperature-sensor\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/tips-for-replacing-the-engine-coolant-temperature-sensor\\\/\"},\"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. 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