{"id":87288,"date":"2023-07-12T22:33:28","date_gmt":"2023-07-13T05:33:28","guid":{"rendered":"https:\/\/blogv2prod.wpenginepowered.com\/blog\/?p=87288"},"modified":"2024-02-02T00:00:05","modified_gmt":"2024-02-02T08:00:05","slug":"12-reasons-your-car-is-making-a-whistling-noise","status":"publish","type":"post","link":"https:\/\/www.carparts.com\/blog\/12-reasons-your-car-is-making-a-whistling-noise\/","title":{"rendered":"12 Reasons Your Car Is Making a Whistling Noise"},"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_551a05-f2 > .kt-inside-inner-col{border-top-width:0px;border-right-width:0px;border-bottom-width:0px;border-left-width:0px;}.kadence-column_551a05-f2 > .kt-inside-inner-col,.kadence-column_551a05-f2 > .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_551a05-f2 > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column_551a05-f2 > .kt-inside-inner-col{flex-direction:column;}.kadence-column_551a05-f2 > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column_551a05-f2 > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column_551a05-f2{position:relative;}@media all and (max-width: 1024px){.kadence-column_551a05-f2 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column_551a05-f2 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column inner-column-1 kadence-column_551a05-f2 qk-look-widget\"><div class=\"kt-inside-inner-col\">\n<div class=\"wp-block-ultimate-post-row ultp-block-ae2500  qk-main-wrap\"><div class=\"ultp-row-wrapper\"><div class=\"ultp-row-content\">\n<div class=\"wp-block-ultimate-post-column ultp-block-c9a3f8\"><div class=\"ultp-column-wrapper\"><style>.wp-block-kadence-advancedheading.kt-adv-heading_82a308-9c, .wp-block-kadence-advancedheading.kt-adv-heading_82a308-9c[data-kb-block=\"kb-adv-heading_82a308-9c\"]{text-align:center;font-size:20px;font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-heading_82a308-9c mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading_82a308-9c[data-kb-block=\"kb-adv-heading_82a308-9c\"] 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_82a308-9c img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-heading_82a308-9c[data-kb-block=\"kb-adv-heading_82a308-9c\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<div class=\"kt-adv-heading_82a308-9c summary-title wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading_82a308-9c\"><span>Summary<\/span><\/div>\n\n\n\n<ul class=\"wp-block-list\"><li>Engine issues such as a bad serpentine belt, damaged radiator pressure cab, turbo leak, or an exhaust leak can cause your car to make a whistling noise.<\/li><li>Damaged weather strips, a bad water pump bearing, or a damaged alternator bearing can also cause a whistling noise.<\/li><li>Worn brake pads or lack of lubrication in the rear axle can also cause whistling issues.<\/li><\/ul>\n<\/div><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n\n\n<p>It can be alarming when there&rsquo;s a whistling sound coming from your car. Whistling sounds are typically airflow related, but similar sounds can be created by mechanical components interacting due to wear, damage, or misalignment. Some electronic throttle bodies will make a whistling sound with the key in the &ldquo;on&rdquo; position even if the car isn&rsquo;t moving and the engine isn&rsquo;t running. This is not a problem but it can be annoying.<\/p>\n\n\n\n<p>But whether your vehicle is parked, running, or idling, strange sounds can signal that there&rsquo;s something wrong. Here&rsquo;s a list of possible causes to look at the next time you wonder, &ldquo;Why does my car make a whistling sound?&rdquo;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Bad Serpentine or Drive Belt<\/h2>\n\n\n\n<p>A <a href=\"https:\/\/www.carparts.com\/blog\/serpentine-belt-symptoms-replacement-cost-and-more\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"bad serpentine\">bad serpentine<\/a> or <a href=\"https:\/\/www.carparts.com\/drive-belt\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"drive belt\">drive belt<\/a> can cause a bad whistling noise as it spins, though the kind of noises belts make aren&rsquo;t typically described as &ldquo;whistling.&rdquo;<\/p>\n\n\n\n<p>The serpentine belt transmits turning force from the crankshaft pulley to the <a href=\"https:\/\/www.carparts.com\/alternator\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"alternator\">alternator<\/a>, <a href=\"https:\/\/www.carparts.com\/power-steering-pump\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"power steering pump\">power steering pump<\/a>, and air conditioner, etc. When there&rsquo;s moisture on the belt from one of the liquids commonly found under the hood like fuel, coolant, or oil, it will cause various different types of noise, but more likely, it&rsquo;ll just cause the belt to slip. Clear water will dry quickly but oil and coolant won&rsquo;t, and water\/coolant mixtures will usually cause a chirping noise rather than whistling.<\/p>\n\n\n<style>.kadence-column_adfd5a-2e > .kt-inside-inner-col{border-top-width:0px;border-right-width:0px;border-bottom-width:0px;border-left-width:0px;}.kadence-column_adfd5a-2e > .kt-inside-inner-col,.kadence-column_adfd5a-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-column_adfd5a-2e > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column_adfd5a-2e > .kt-inside-inner-col{flex-direction:column;}.kadence-column_adfd5a-2e > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column_adfd5a-2e > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column_adfd5a-2e{position:relative;}@media all and (max-width: 1024px){.kadence-column_adfd5a-2e > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column_adfd5a-2e > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column inner-column-1 kadence-column_adfd5a-2e kb-section-dir-vertical kb-section-sm-dir-vertical pro-tip-widget\"><div class=\"kt-inside-inner-col\"><style>#kt-layout-id_836468-05 > .kt-row-column-wrap{align-content:start;}:where(#kt-layout-id_836468-05 > .kt-row-column-wrap) > .wp-block-kadence-column{justify-content:start;}#kt-layout-id_836468-05 > .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_836468-05 > .kt-row-layout-overlay{opacity:0.00;}#kt-layout-id_836468-05 .kt-row-layout-bottom-sep{height:100px;}#kt-layout-id_836468-05 .kt-row-layout-bottom-sep svg{width:100%;}#kt-layout-id_836468-05 .kt-row-layout-bottom-sep svg{fill:#ffffff!important;}#kt-layout-id_836468-05 .kt-row-layout-top-sep{height:100px;}#kt-layout-id_836468-05 .kt-row-layout-top-sep svg{width:100%;}#kt-layout-id_836468-05 .kt-row-layout-top-sep svg{fill:#ffffff!important;}@media all and (max-width: 1024px){#kt-layout-id_836468-05 > .kt-row-column-wrap{grid-template-columns:minmax(0, 1fr) minmax(0, 2fr);}}@media all and (max-width: 1024px){#kt-layout-id_836468-05 .kt-row-layout-bottom-sep{height:px;}}@media all and (max-width: 1024px){#kt-layout-id_836468-05 .kt-row-layout-bottom-sep svg{width:%;}}@media all and (max-width: 767px){#kt-layout-id_836468-05 > .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_836468-05 .kt-row-layout-bottom-sep{height:px;}#kt-layout-id_836468-05 .kt-row-layout-bottom-sep svg{width:%;}}<\/style>\n<div class=\"wp-block-kadence-rowlayout alignnone pro-tip-wrap\"><div id=\"kt-layout-id_836468-05\" class=\"kt-row-layout-inner kt-layout-id_836468-05\"><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_a7712f-04 > .kt-inside-inner-col{display:flex;}.kadence-column_a7712f-04 > .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_a7712f-04 > .kt-inside-inner-col,.kadence-column_a7712f-04 > .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_a7712f-04 > .kt-inside-inner-col{flex-direction:row;flex-wrap:wrap;align-items:center;}.kadence-column_a7712f-04 > .kt-inside-inner-col > *, .kadence-column_a7712f-04 > .kt-inside-inner-col > figure.wp-block-image, .kadence-column_a7712f-04 > .kt-inside-inner-col > figure.wp-block-kadence-image{margin-top:0px;margin-bottom:0px;}.kadence-column_a7712f-04 > .kt-inside-inner-col > .kb-image-is-ratio-size{flex-grow:1;}.kadence-column_a7712f-04 > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column_a7712f-04{position:relative;}@media all and (max-width: 1024px){.kadence-column_a7712f-04 > .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_a7712f-04 > .kt-inside-inner-col > *, .kadence-column_a7712f-04 > .kt-inside-inner-col > figure.wp-block-image, .kadence-column_a7712f-04 > .kt-inside-inner-col > figure.wp-block-kadence-image{margin-top:0px;margin-bottom:0px;}.kadence-column_a7712f-04 > .kt-inside-inner-col > .kb-image-is-ratio-size{flex-grow:1;}}@media all and (max-width: 767px){.kadence-column_a7712f-04 > .kt-inside-inner-col{flex-direction:row;flex-wrap:wrap;justify-content:flex-start;}.kadence-column_a7712f-04 > .kt-inside-inner-col > *, .kadence-column_a7712f-04 > .kt-inside-inner-col > figure.wp-block-image, .kadence-column_a7712f-04 > .kt-inside-inner-col > figure.wp-block-kadence-image{margin-top:0px;margin-bottom:0px;}.kadence-column_a7712f-04 > .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_a7712f-04 kb-section-dir-horizontal kb-section-md-dir-horizontal pro-tip-item1\"><div class=\"kt-inside-inner-col\"><style>.kb-image_ac7928-90.kb-image-is-ratio-size, .kb-image_ac7928-90 .kb-image-is-ratio-size{max-width:45px;width:100%;}.wp-block-kadence-column > .kt-inside-inner-col > .kb-image_ac7928-90.kb-image-is-ratio-size, .wp-block-kadence-column > .kt-inside-inner-col > .kb-image_ac7928-90 .kb-image-is-ratio-size{align-self:unset;}.kb-image_ac7928-90 figure{max-width:45px;}.kb-image_ac7928-90 .image-is-svg, .kb-image_ac7928-90 .image-is-svg img{width:100%;}.kb-image_ac7928-90 .kb-image-has-overlay:after{opacity:0.3;}<\/style>\n<div class=\"wp-block-kadence-image kb-image_ac7928-90\"><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_99e147-3d > .kt-inside-inner-col{border-top-width:0px;border-right-width:0px;border-bottom-width:0px;border-left-width:0px;}.kadence-column_99e147-3d > .kt-inside-inner-col,.kadence-column_99e147-3d > .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_99e147-3d > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column_99e147-3d > .kt-inside-inner-col{flex-direction:column;}.kadence-column_99e147-3d > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column_99e147-3d > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column_99e147-3d{position:relative;}@media all and (max-width: 1024px){.kadence-column_99e147-3d > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column_99e147-3d > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column inner-column-2 kadence-column_99e147-3d 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>\nBe careful not to spill coolant on your belts and pulleys during DIY operations if you don&rsquo;t want annoying belt chirp that may take a long time to go away.\n        <\/p>\n    <\/div>\n<\/div>\n<\/div><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n<p>If you hear an intermittent whistling noise, it could also be caused by a loose or worn serpentine belt. When it&rsquo;s loose, friction between the inner surface of the belt and the outer surface of its pulley make a whistling or screeching noise. A loose belt will usually make the most noise right after the engine is started as the alternator struggles to recover the battery power lost while spinning the starter. This can mean the belt is worn or just loose for some reason.<\/p>\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\/2023\/07\/car-serpentine-belt-1024x683.jpg\" alt=\"close up shot of a car serpentine belt\" class=\"wp-image-87346\" width=\"1024\" height=\"683\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/07\/car-serpentine-belt-1024x683.jpg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/07\/car-serpentine-belt-300x200.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/07\/car-serpentine-belt-768x512.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/07\/car-serpentine-belt-600x400.jpg 600w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/07\/car-serpentine-belt-1200x800.jpg 1200w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/07\/car-serpentine-belt-150x100.jpg 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/07\/car-serpentine-belt.jpg 1500w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption>If you hear an intermittent whistling noise, it could also be caused by a loose or worn serpentine belt.<\/figcaption><\/figure>\n\n\n\n<p>Keep in mind that dirt in the streams of the alternator pulley can also cause the <a href=\"https:\/\/www.carparts.com\/blog\/serpentine-belt-routing-replacement-example-diagram\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"serpentine belt to slip\">serpentine belt to slip<\/a>, which results in a whistling, chirping, or squealing sound.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Damaged Weather Stripping<\/h2>\n\n\n\n<p>The <a href=\"https:\/\/www.carparts.com\/weatherstrip-kit\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"weather stripping\">weather stripping<\/a> around your vehicle&rsquo;s doors and windows is there for aesthetic purposes and for aerodynamics, as well as to prevent air and water from causing problems. When the weather stripping is loose or damaged, air can come whistling in through the cracks while the vehicle is driving at road speed.<\/p>\n\n\n<style>.kadence-column_7840b1-46 > .kt-inside-inner-col{border-top-width:0px;border-right-width:0px;border-bottom-width:0px;border-left-width:0px;}.kadence-column_7840b1-46 > .kt-inside-inner-col,.kadence-column_7840b1-46 > .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_7840b1-46 > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column_7840b1-46 > .kt-inside-inner-col{flex-direction:column;}.kadence-column_7840b1-46 > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column_7840b1-46 > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column_7840b1-46{position:relative;}@media all and (max-width: 1024px){.kadence-column_7840b1-46 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column_7840b1-46 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column inner-column-1 kadence-column_7840b1-46 kb-section-dir-vertical kb-section-sm-dir-vertical pro-tip-widget\"><div class=\"kt-inside-inner-col\"><style>#kt-layout-id_ff2a24-9d > .kt-row-column-wrap{align-content:start;}:where(#kt-layout-id_ff2a24-9d > .kt-row-column-wrap) > .wp-block-kadence-column{justify-content:start;}#kt-layout-id_ff2a24-9d > .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_ff2a24-9d > .kt-row-layout-overlay{opacity:0.00;}#kt-layout-id_ff2a24-9d .kt-row-layout-bottom-sep{height:100px;}#kt-layout-id_ff2a24-9d .kt-row-layout-bottom-sep svg{width:100%;}#kt-layout-id_ff2a24-9d .kt-row-layout-bottom-sep svg{fill:#ffffff!important;}#kt-layout-id_ff2a24-9d .kt-row-layout-top-sep{height:100px;}#kt-layout-id_ff2a24-9d .kt-row-layout-top-sep svg{width:100%;}#kt-layout-id_ff2a24-9d .kt-row-layout-top-sep svg{fill:#ffffff!important;}@media all and (max-width: 1024px){#kt-layout-id_ff2a24-9d > .kt-row-column-wrap{grid-template-columns:minmax(0, 1fr) minmax(0, 2fr);}}@media all and (max-width: 1024px){#kt-layout-id_ff2a24-9d .kt-row-layout-bottom-sep{height:px;}}@media all and (max-width: 1024px){#kt-layout-id_ff2a24-9d .kt-row-layout-bottom-sep svg{width:%;}}@media all and (max-width: 767px){#kt-layout-id_ff2a24-9d > .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_ff2a24-9d .kt-row-layout-bottom-sep{height:px;}#kt-layout-id_ff2a24-9d .kt-row-layout-bottom-sep svg{width:%;}}<\/style>\n<div class=\"wp-block-kadence-rowlayout alignnone pro-tip-wrap\"><div id=\"kt-layout-id_ff2a24-9d\" class=\"kt-row-layout-inner kt-layout-id_ff2a24-9d\"><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_6c4575-41 > .kt-inside-inner-col{display:flex;}.kadence-column_6c4575-41 > .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_6c4575-41 > .kt-inside-inner-col,.kadence-column_6c4575-41 > .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_6c4575-41 > .kt-inside-inner-col{flex-direction:row;flex-wrap:wrap;align-items:center;}.kadence-column_6c4575-41 > .kt-inside-inner-col > *, .kadence-column_6c4575-41 > .kt-inside-inner-col > figure.wp-block-image, .kadence-column_6c4575-41 > .kt-inside-inner-col > figure.wp-block-kadence-image{margin-top:0px;margin-bottom:0px;}.kadence-column_6c4575-41 > .kt-inside-inner-col > .kb-image-is-ratio-size{flex-grow:1;}.kadence-column_6c4575-41 > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column_6c4575-41{position:relative;}@media all and (max-width: 1024px){.kadence-column_6c4575-41 > .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_6c4575-41 > .kt-inside-inner-col > *, .kadence-column_6c4575-41 > .kt-inside-inner-col > figure.wp-block-image, .kadence-column_6c4575-41 > .kt-inside-inner-col > figure.wp-block-kadence-image{margin-top:0px;margin-bottom:0px;}.kadence-column_6c4575-41 > .kt-inside-inner-col > .kb-image-is-ratio-size{flex-grow:1;}}@media all and (max-width: 767px){.kadence-column_6c4575-41 > .kt-inside-inner-col{flex-direction:row;flex-wrap:wrap;justify-content:flex-start;}.kadence-column_6c4575-41 > .kt-inside-inner-col > *, .kadence-column_6c4575-41 > .kt-inside-inner-col > figure.wp-block-image, .kadence-column_6c4575-41 > .kt-inside-inner-col > figure.wp-block-kadence-image{margin-top:0px;margin-bottom:0px;}.kadence-column_6c4575-41 > .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_6c4575-41 kb-section-dir-horizontal kb-section-md-dir-horizontal pro-tip-item1\"><div class=\"kt-inside-inner-col\"><style>.kb-image_0e4572-71.kb-image-is-ratio-size, .kb-image_0e4572-71 .kb-image-is-ratio-size{max-width:45px;width:100%;}.wp-block-kadence-column > .kt-inside-inner-col > .kb-image_0e4572-71.kb-image-is-ratio-size, .wp-block-kadence-column > .kt-inside-inner-col > .kb-image_0e4572-71 .kb-image-is-ratio-size{align-self:unset;}.kb-image_0e4572-71 figure{max-width:45px;}.kb-image_0e4572-71 .image-is-svg, .kb-image_0e4572-71 .image-is-svg img{width:100%;}.kb-image_0e4572-71 .kb-image-has-overlay:after{opacity:0.3;}<\/style>\n<div class=\"wp-block-kadence-image kb-image_0e4572-71\"><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_f7ec5e-94 > .kt-inside-inner-col{border-top-width:0px;border-right-width:0px;border-bottom-width:0px;border-left-width:0px;}.kadence-column_f7ec5e-94 > .kt-inside-inner-col,.kadence-column_f7ec5e-94 > .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_f7ec5e-94 > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column_f7ec5e-94 > .kt-inside-inner-col{flex-direction:column;}.kadence-column_f7ec5e-94 > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column_f7ec5e-94 > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column_f7ec5e-94{position:relative;}@media all and (max-width: 1024px){.kadence-column_f7ec5e-94 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column_f7ec5e-94 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column inner-column-2 kadence-column_f7ec5e-94 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>\nWhat mechanics will do when they&rsquo;re looking for a whistling sound is cover the weatherstripping with wide masking tape and then they&rsquo;ll drive the vehicle to see if the whistling noise is gone.\n        <\/p>\n    <\/div>\n<\/div>\n<\/div><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n<p>Missing wheel well splash shields and other similar parts (like the big cover some vehicles have under the engine that must be removed for oil changes) can also cause air noises of various kinds while driving.<\/p>\n\n\n\n<p>Roof racks and aftermarket antennas can also cause whistling noises. The spiral fluting on factory radio antennas is there to prevent the antenna from making a whistling noise as it cuts through the air while driving.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Overheating<\/h2>\n\n\n\n<p>When your <a href=\"https:\/\/www.carparts.com\/blog\/what-type-of-damage-to-expect-from-an-overheating-car\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"vehicle overheats\">vehicle overheats<\/a>, you might notice a faint whistling sound coming from your engine. This is the result of boiling engine coolant escaping to relieve pressure. When this happens, it&rsquo;s a serious problem and means you need to pull over immediately. Check your instrument cluster in situations like this to see if the engine is overheating. If you have to pull over, make sure you do so in a safe place.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Radiator Pressure Cap Damage<\/h2>\n\n\n\n<p>If you hear whistling from under the hood and the vehicle&rsquo;s engine is off, it could be an indicator of a worn radiator pressure cap. This pressure cap is designed to keep the system pressure at 16 PSI to raise the boiling point of the coolant. When in doubt, replace the cap. It doesn&rsquo;t cost much, but make sure you get the right one for your vehicle.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Vacuum or Turbo Intercooler Leak<\/h2>\n\n\n\n<p>Whistling sounds can also come from a <a href=\"https:\/\/www.carparts.com\/blog\/vacuum-leak-symptoms-causes-how-to-fix\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"vacuum leak\">vacuum leak<\/a> or from loose turbo intercooler hose connections. The big tubes that carry air from a supercharger or turbocharger to the intercooler have pressure in them when the engine is loaded. If the pressure escapes past a loose hose, it&rsquo;ll almost always cause a whistling noise.<\/p>\n\n\n\n<p>A vacuum leak happens when some part of the engine&rsquo;s intake system is compromised so that it leaks, but a vacuum leak doesn&rsquo;t always make whistling noise. It might just make a hissing sound and the engine may either run rough or at an abnormally high idle speed.<\/p>\n\n\n\n<p>Air entering the <a href=\"https:\/\/www.carparts.com\/intake-manifold\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"intake manifold\">intake manifold<\/a> bypasses the throttle body, which is where the mass air flow sensor is. Because the powertrain control module (PCM) dispenses fuel to the engine based on the air measured by the sensor, a vacuum leak prevents the engine from performing optimally.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Worn Brake Pads<\/h2>\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\/2023\/07\/worn-brake-pad-1024x683.jpg\" alt=\"image of a worn out brake pad\" class=\"wp-image-87347\" width=\"1024\" height=\"683\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/07\/worn-brake-pad-1024x683.jpg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/07\/worn-brake-pad-300x200.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/07\/worn-brake-pad-768x512.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/07\/worn-brake-pad-600x400.jpg 600w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/07\/worn-brake-pad-1200x800.jpg 1200w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/07\/worn-brake-pad-150x100.jpg 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/07\/worn-brake-pad.jpg 1500w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption>Brake pads won&rsquo;t typically make a whistling noise. They tend to make squealing or scrubbing noises.<\/figcaption><\/figure>\n\n\n\n<p>Whistling or other types of sounds while you brake should be investigated as soon as possible. This doesn&rsquo;t always mean the brakes are about to fail, but it needs to be checked out nonetheless. <a href=\"https:\/\/www.carparts.com\/blog\/how-to-diagnose-worn-brake-pads\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Brake pads\">Brake pads<\/a> won&rsquo;t typically make a whistling noise. They tend to make squealing or scrubbing noises.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Grease on Water Pump Bearings<\/h2>\n\n\n\n<p>Failing water pump bearings can make whistling sounds that may change with engine temperature so that the sound is worse with a cold engine but fades away as the engine warms up. Modern water pump bearings are sealed and can&rsquo;t be lubricated separately, so you might need to bring your vehicle to a mechanic for a fix.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Differential Whine<\/h2>\n\n\n\n<p>If your car makes a whistling noise only when in motion, it could be differential whine (which is usually not referred to as a &ldquo;whistle.&rdquo; The term &ldquo;differential&rdquo; is somewhat confusing because this is the part of the gearing in the center of the rear axle that allows the inner and outer wheels to rotate at different speeds during turns.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p>The term &ldquo;differential&rdquo; is somewhat confusing because this is the part of the gearing in the center of the rear axle that allows the inner and outer wheels to rotate at different speeds during turns.<\/p><cite><em>&ndash;&nbsp;<\/em><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>A whining noise from the rear axle won&rsquo;t be because of the <a href=\"https:\/\/www.carparts.com\/differential\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"differential\">differential<\/a> gears; rather, it&rsquo;ll be due to issues with the ring gear and pinion (which provide torque to the drive wheels) having become mismatched due to overheating or lack of lubrication or perhaps bearing failure, so that they &ldquo;sing&rdquo; while driving. This kind of noise will usually change during acceleration and deceleration maneuvers. Roaring or rumbling noises from the rear axle will be bearing failure. In any case, you must have a mechanic look over your vehicle.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Alternator Bearing Failure<\/h2>\n\n\n\n<p>Alternator bearings can fail like any other bearing even though they&rsquo;re sealed with their own grease charge. If the seals fail or the bearing components become compromised, the bearings can make squealing or whining noises, though these are not usually described as &ldquo;whistling.&rdquo;<\/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<h2 class=\"wp-block-heading\">Exhaust System Issues<\/h2>\n\n\n\n<p>Different issues in the <a href=\"https:\/\/www.carparts.com\/blog\/exhaust-system-parts-101-the-basics-diagram-included\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"exhaust system\">exhaust system<\/a> can lead to whistling sounds from all over your vehicle. For example, if your muffler or tailpipe has a hole, exhaust gasses can escape and make a whistling sound while you&rsquo;re accelerating. This is similar to the turbocharger intercooler noises mentioned earlier because you have high flow of gasses through tubes that, if they begin to leak the right way, can produce a whistling noise. If the exhaust is clogged, a whistling noise might be heard that otherwise wouldn&rsquo;t be.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Worn Belt Tensioner or Idler<\/h2>\n\n\n\n<p>Since most vehicles have spring-loaded belt tensioners and idlers, the bearings in those can whine or rumble but they don&rsquo;t typically whistle.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Pressurized Refrigerant<\/h2>\n\n\n\n<p>Sometimes, the whistling noise you hear after a long drive is nothing to worry about. It might be the refrigerant in your vehicle returning to normal pressure. When you use your air conditioner, your compressor pressurizes your refrigerant. When you&rsquo;ve been using the air conditioner for a long time, the refrigerant ends up under a lot of pressure. Once you shut off the engine, the refrigerant passes through an expansion valve and makes a soft whistling noise as it equalizes.<\/p>\n\n\n\n<p>As you can see, there are a lot of potential reasons why your car is making whistling noises. We recommend bringing it to a licensed mechanic if you&rsquo;re having a hard time diagnosing the issue.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Where To Get Parts To Resolve Your the Whistling Noise in Your Car<\/h2>\n\n\n\n<p>There are many possible reasons behind your car&rsquo;s whistling noise, but you&rsquo;ll find that many of them can be resolved by replacing problematic parts. In the case of a bad serpentine or drive belt, you can expect issues with the various accessories that rely on it. Issues with the <a href=\"https:\/\/www.carparts.com\/brake-pad-set\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"brake pads\">brake pads<\/a> can of course lead to problems braking, and so on. It&rsquo;s best to have a trusted mechanic identify what&rsquo;s wrong and what replacement parts you need for the repairs. A convenient place to shop for those parts is CarParts.com<\/p>\n\n\n\n<p><a href=\"http:\/\/carparts.com\" target=\"_blank\" rel=\"noreferrer noopener nofollow\" aria-label=\"CarParts.com\">CarParts.com<\/a> has you covered with its large selection of quality parts at different price points. Our aftermarket parts come from a host of trusted manufacturers, and our 60-day return policy ensures that you can order with confidence. We aim to always keep you safe with a convenient and secure checkout. Finally, with our fast shipping, you can rest assured that your parts will arrive in as fast as two business days.<\/p>\n\n\n\n<p>Get rid of that pesky whistling noise. Place your order for a new <a href=\"https:\/\/www.carparts.com\/serpentine-belt\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"serpentine belt\">serpentine belt<\/a> or other parts on CarParts.com today.<\/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>It can be alarming when there&rsquo;s a whistling sound coming from your car. Whistling sounds are typically airflow related, but&#8230; <a href=\"https:\/\/www.carparts.com\/blog\/12-reasons-your-car-is-making-a-whistling-noise\/\" rel=\"nofollow\">Read More<\/a><\/p>\n","protected":false},"author":4,"featured_media":87342,"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":[52,3743],"tags":[1174,3074,1310,1237,1164,1188,3833],"ppma_author":[2607,2985],"class_list":{"0":"post-87288","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-diy","8":"category-maintenance","9":"tag-brake-pad-set-2","10":"tag-differential","11":"tag-drive-belt","12":"tag-exhaust-system-2","13":"tag-serpentine-belt-2","14":"tag-water-pump-2","15":"tag-weatherstrip-kit","16":"entry"},"acf":{"adrotate_specific_mobile_ad":"","adrotate_specific_desktop_ad":""},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>12 Reasons Your Car Is Making a Whistling Noise - In The Garage with CarParts.com<\/title>\n<meta name=\"description\" content=\"It\u2019s never reassuring if your vehicle starts making strange whistling noises. Find out the potential causes behind this worrying sound.\" \/>\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\/12-reasons-your-car-is-making-a-whistling-noise\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"12 Reasons Your Car Is Making a Whistling Noise - In The Garage with CarParts.com\" \/>\n<meta property=\"og:description\" content=\"It\u2019s never reassuring if your vehicle starts making strange whistling noises. 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