{"id":119026,"date":"2024-10-02T23:54:25","date_gmt":"2024-10-03T06:54:25","guid":{"rendered":"https:\/\/blogv2prod.wpenginepowered.com\/blog\/?p=119026"},"modified":"2024-12-20T19:42:36","modified_gmt":"2024-12-21T03:42:36","slug":"why-did-your-vehicles-serpentine-belt-snap","status":"publish","type":"post","link":"https:\/\/www.carparts.com\/blog\/why-did-your-vehicles-serpentine-belt-snap\/","title":{"rendered":"Why Did Your Vehicle\u2019s Serpentine Belt Snap?"},"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\"> 4<\/span> <span class=\"rt-label rt-postfix\">minutes<\/span><\/span><style>.kadence-column119026_b82174-33 > .kt-inside-inner-col,.kadence-column119026_b82174-33 > .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-column119026_b82174-33 > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column119026_b82174-33 > .kt-inside-inner-col{flex-direction:column;}.kadence-column119026_b82174-33 > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column119026_b82174-33 > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column119026_b82174-33{position:relative;}@media all and (max-width: 1024px){.kadence-column119026_b82174-33 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column119026_b82174-33 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column119026_b82174-33 inner-column-1 qk-look-widget\"><div class=\"kt-inside-inner-col\">\n<div class=\"wp-block-ultimate-post-row ultp-block-2d9d5d  qk-main-wrap\"><div class=\"ultp-row-wrapper\"><div class=\"ultp-row-content\">\n<div class=\"wp-block-ultimate-post-column ultp-block-3a8526\"><div class=\"ultp-column-wrapper\"><style>.wp-block-kadence-advancedheading.kt-adv-heading119026_7b38da-ec, .wp-block-kadence-advancedheading.kt-adv-heading119026_7b38da-ec[data-kb-block=\"kb-adv-heading119026_7b38da-ec\"]{text-align:center;font-size:20px;font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-heading119026_7b38da-ec mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading119026_7b38da-ec[data-kb-block=\"kb-adv-heading119026_7b38da-ec\"] 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-heading119026_7b38da-ec img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-heading119026_7b38da-ec[data-kb-block=\"kb-adv-heading119026_7b38da-ec\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<div class=\"kt-adv-heading119026_7b38da-ec summary-title wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading119026_7b38da-ec\"><span>Summary<\/span><\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li>If your vehicle&rsquo;s serpentine belt snaps, it might become difficult to control and may lose electrical power<\/li>\n\n\n\n<li>Things that might cause a serpentine belt to snap include a defective pulley bearing, accessory component issues, and a worn serpentine belt.<\/li>\n\n\n\n<li>Conduct regular serpentine belt inspections and replace your vehicle&rsquo;s serpentine belt every 50,000 miles to be safe.<\/li>\n<\/ul>\n<\/div><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n\n\n<p>Your vehicle&rsquo;s <a href=\"https:\/\/www.carparts.com\/serpentine-belt\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"serpentine belt\">serpentine belt<\/a> helps transfer power from the engine to various other systems and parts, including the alternator, air conditioning, and steering pump. If your serpentine belt snaps, those systems and components will stop functioning because they stop receiving power. In this article, we&rsquo;ll be taking a look at the various possible reasons why the serpentine belt on your car failed or snapped.<\/p>\n\n\n<style>.kadence-column119026_5eec34-71 > .kt-inside-inner-col,.kadence-column119026_5eec34-71 > .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-column119026_5eec34-71 > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column119026_5eec34-71 > .kt-inside-inner-col{flex-direction:column;}.kadence-column119026_5eec34-71 > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column119026_5eec34-71 > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column119026_5eec34-71{position:relative;}@media all and (max-width: 1024px){.kadence-column119026_5eec34-71 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column119026_5eec34-71 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column119026_5eec34-71 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-id119026_5d161b-83 > .kt-row-column-wrap{align-content:start;}:where(.kb-row-layout-id119026_5d161b-83 > .kt-row-column-wrap) > .wp-block-kadence-column{justify-content:start;}.kb-row-layout-id119026_5d161b-83 > .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-id119026_5d161b-83 > .kt-row-layout-overlay{opacity:0.00;}.kb-row-layout-id119026_5d161b-83 .kt-row-layout-bottom-sep{height:100px;}.kb-row-layout-id119026_5d161b-83 .kt-row-layout-bottom-sep svg{width:100%;}.kb-row-layout-id119026_5d161b-83 .kt-row-layout-bottom-sep svg{fill:#ffffff!important;}.kb-row-layout-id119026_5d161b-83 .kt-row-layout-top-sep{height:100px;}.kb-row-layout-id119026_5d161b-83 .kt-row-layout-top-sep svg{width:100%;}.kb-row-layout-id119026_5d161b-83 .kt-row-layout-top-sep svg{fill:#ffffff!important;}@media all and (max-width: 1024px){.kb-row-layout-id119026_5d161b-83 > .kt-row-column-wrap{grid-template-columns:minmax(0, 1fr) minmax(0, 2fr);}}@media all and (max-width: 1024px){.kb-row-layout-id119026_5d161b-83 .kt-row-layout-bottom-sep{height:px;}}@media all and (max-width: 1024px){.kb-row-layout-id119026_5d161b-83 .kt-row-layout-bottom-sep svg{width:%;}}@media all and (max-width: 767px){.kb-row-layout-id119026_5d161b-83 > .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-id119026_5d161b-83 .kt-row-layout-bottom-sep{height:px;}.kb-row-layout-id119026_5d161b-83 .kt-row-layout-bottom-sep svg{width:%;}}<\/style><div class=\"kb-row-layout-wrap kb-row-layout-id119026_5d161b-83 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-column119026_ab8796-1b > .kt-inside-inner-col{display:flex;}.kadence-column119026_ab8796-1b > .kt-inside-inner-col{min-height:45px;}.kadence-column119026_ab8796-1b > .kt-inside-inner-col,.kadence-column119026_ab8796-1b > .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-column119026_ab8796-1b > .kt-inside-inner-col{row-gap:0px;column-gap:0px;}.kadence-column119026_ab8796-1b > .kt-inside-inner-col{flex-direction:row;flex-wrap:wrap;align-items:center;}.kadence-column119026_ab8796-1b > .kt-inside-inner-col > *, .kadence-column119026_ab8796-1b > .kt-inside-inner-col > figure.wp-block-image, .kadence-column119026_ab8796-1b > .kt-inside-inner-col > figure.wp-block-kadence-image{margin-top:0px;margin-bottom:0px;}.kadence-column119026_ab8796-1b > .kt-inside-inner-col > .kb-image-is-ratio-size{flex-grow:1;}.kadence-column119026_ab8796-1b > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column119026_ab8796-1b{position:relative;}@media all and (max-width: 1024px){.kadence-column119026_ab8796-1b > .kt-inside-inner-col{flex-direction:row;flex-wrap:wrap;align-items:center;}}@media all and (min-width: 768px) and (max-width: 1024px){.kadence-column119026_ab8796-1b > .kt-inside-inner-col > *, .kadence-column119026_ab8796-1b > .kt-inside-inner-col > figure.wp-block-image, .kadence-column119026_ab8796-1b > .kt-inside-inner-col > figure.wp-block-kadence-image{margin-top:0px;margin-bottom:0px;}.kadence-column119026_ab8796-1b > .kt-inside-inner-col > .kb-image-is-ratio-size{flex-grow:1;}}@media all and (max-width: 767px){.kadence-column119026_ab8796-1b > .kt-inside-inner-col{flex-direction:row;flex-wrap:wrap;justify-content:flex-start;}.kadence-column119026_ab8796-1b > .kt-inside-inner-col > *, .kadence-column119026_ab8796-1b > .kt-inside-inner-col > figure.wp-block-image, .kadence-column119026_ab8796-1b > .kt-inside-inner-col > figure.wp-block-kadence-image{margin-top:0px;margin-bottom:0px;}.kadence-column119026_ab8796-1b > .kt-inside-inner-col > .kb-image-is-ratio-size{flex-grow:1;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column119026_ab8796-1b kb-section-dir-horizontal kb-section-md-dir-horizontal inner-column-1 pro-tip-item1\"><div class=\"kt-inside-inner-col\"><style>.kb-image119026_5b24b9-58.kb-image-is-ratio-size, .kb-image119026_5b24b9-58 .kb-image-is-ratio-size{max-width:45px;width:100%;}.wp-block-kadence-column > .kt-inside-inner-col > .kb-image119026_5b24b9-58.kb-image-is-ratio-size, .wp-block-kadence-column > .kt-inside-inner-col > .kb-image119026_5b24b9-58 .kb-image-is-ratio-size{align-self:unset;}.kb-image119026_5b24b9-58 figure{max-width:45px;}.kb-image119026_5b24b9-58 .image-is-svg, .kb-image119026_5b24b9-58 .image-is-svg img{width:100%;}.kb-image119026_5b24b9-58 .kb-image-has-overlay:after{opacity:0.3;}<\/style>\n<div class=\"wp-block-kadence-image kb-image119026_5b24b9-58\"><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-column119026_5a0918-d3 > .kt-inside-inner-col,.kadence-column119026_5a0918-d3 > .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-column119026_5a0918-d3 > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column119026_5a0918-d3 > .kt-inside-inner-col{flex-direction:column;}.kadence-column119026_5a0918-d3 > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column119026_5a0918-d3 > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column119026_5a0918-d3{position:relative;}@media all and (max-width: 1024px){.kadence-column119026_5a0918-d3 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column119026_5a0918-d3 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column119026_5a0918-d3 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>\nNote, however, that serpentine belts almost never actually &ldquo;snap.&rdquo; They usually just slip for one reason or another. Defective Idler or Tensioner Pulley Bearing\n        <\/p>\n    <\/div>\n<\/div>\n<\/div><\/div>\n\n<\/div><\/div><\/div><\/div>\n\n\n\n<div class=\"wp-block-data443-irp-shortcode irp-shortcode\"><div style=\"clear:both; margin-top:0em; margin-bottom:1em;\"><a href=\"https:\/\/www.carparts.com\/blog\/underhood-checks\/\" target=\"_self\" rel=\"dofollow\" class=\"ufc25071e708683330b9ccab8353c9a37\"><style> .ufc25071e708683330b9ccab8353c9a37 { padding:0px; margin: 0; padding-top:1em!important; padding-bottom:1em!important; width:100%; display: block; font-weight:bold; background-color:#eaeaea; border:0!important; border-left:4px solid #34495E!important; text-decoration:none; } .ufc25071e708683330b9ccab8353c9a37:active, .ufc25071e708683330b9ccab8353c9a37:hover { opacity: 1; transition: opacity 250ms; webkit-transition: opacity 250ms; text-decoration:none; } .ufc25071e708683330b9ccab8353c9a37 { transition: background-color 250ms; webkit-transition: background-color 250ms; opacity: 1; transition: opacity 250ms; webkit-transition: opacity 250ms; } .ufc25071e708683330b9ccab8353c9a37 .ctaText { font-weight:bold; color:#464646; text-decoration:none; font-size: 16px; } .ufc25071e708683330b9ccab8353c9a37 .postTitle { color:#000000; text-decoration: underline!important; font-size: 16px; } .ufc25071e708683330b9ccab8353c9a37:hover .postTitle { text-decoration: underline!important; } <\/style><div style=\"padding-left:1em; padding-right:1em;\"><span class=\"ctaText\">See also<\/span>&nbsp; <span class=\"postTitle\">Underhood Checks<\/span><\/div><\/a><\/div><\/div>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"563\" src=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2024\/10\/illustration-of-serpentine-belt-snakes-around-the-crankshaft-and-the-accessory-pulleys-and-across-an-idler-pulley-1024x563.jpg\" alt=\"illustration of serpentine belt snakes around the crankshaft and the accessory pulleys and across an idler pulley\" class=\"wp-image-124584\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2024\/10\/illustration-of-serpentine-belt-snakes-around-the-crankshaft-and-the-accessory-pulleys-and-across-an-idler-pulley-1024x563.jpg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2024\/10\/illustration-of-serpentine-belt-snakes-around-the-crankshaft-and-the-accessory-pulleys-and-across-an-idler-pulley-300x165.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2024\/10\/illustration-of-serpentine-belt-snakes-around-the-crankshaft-and-the-accessory-pulleys-and-across-an-idler-pulley-768x422.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2024\/10\/illustration-of-serpentine-belt-snakes-around-the-crankshaft-and-the-accessory-pulleys-and-across-an-idler-pulley-150x82.jpg 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2024\/10\/illustration-of-serpentine-belt-snakes-around-the-crankshaft-and-the-accessory-pulleys-and-across-an-idler-pulley.jpg 1241w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption class=\"wp-element-caption\">The serpentine belt snakes around the crankshaft and the accessory pulleys and across an idler pulley or two as well as the tensioner <strong>(<\/strong>see illustration). The tensioner pulley and the idler pulleys have bearings. The A\/C pulley has a bearing. Any of these can fail and cause problems with the belt. | Image Source: Richard McCuistian<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Accessory Component Issues<\/h2>\n\n\n\n<p>In most vehicles, the serpentine belt runs all the accessory components such as the air conditioning compressor and the crankshaft pulley. If any of the connected components are inoperative or acting up in any way, it can cause issues with the serpentine belt as well, which can cause the belt to develop issues. The most common components causing this would be the A\/C compressor or the water pump.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Worn Belt<\/h3>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"457\" height=\"508\" src=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2024\/10\/a-diagram-showing-how-to-identify-a-worn-belt.jpg\" alt=\"a diagram showing how to identify a worn belt\" class=\"wp-image-124585\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2024\/10\/a-diagram-showing-how-to-identify-a-worn-belt.jpg 457w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2024\/10\/a-diagram-showing-how-to-identify-a-worn-belt-270x300.jpg 270w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2024\/10\/a-diagram-showing-how-to-identify-a-worn-belt-150x167.jpg 150w\" sizes=\"(max-width: 457px) 100vw, 457px\"><figcaption class=\"wp-element-caption\">Diagram showing how to identify a worn belt | Image Source: Richard McCuistian<\/figcaption><\/figure>\n\n\n\n<p>The serpentine belt will inevitably wear down over time. That&rsquo;s why you should <a href=\"https:\/\/www.carparts.com\/blog\/serpentine-belt-symptoms-replacement-cost-and-more\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"replace your vehicle&rsquo;s serpentine belt\">replace your vehicle&rsquo;s serpentine belt<\/a> when necessary. Exactly when you should replace your vehicle&rsquo;s serpentine belt depends on the belt manufacturer and how you drive. It&rsquo;s best to replace the belt every 50,000 to 100,000 miles, otherwise it might snap while you drive. Check with your serpentine belt&rsquo;s manufacturer for the recommended replacement mileage.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Inoperative Pulleys<\/h3>\n\n\n\n<p>As we&rsquo;ve mentioned, the pulleys keep the serpentine belt on the right track as it drives the various components. If any of the pulleys is inoperative, out of line, or damaged, the serpentine belt might slip off its track and squeal or jump off entirely.<\/p>\n\n\n\n<div class=\"wp-block-data443-irp-shortcode irp-shortcode\"><div style=\"clear:both; margin-top:0em; margin-bottom:1em;\"><a href=\"https:\/\/www.carparts.com\/blog\/everything-you-need-to-know-about-power-steering-belts\/\" target=\"_self\" rel=\"dofollow\" class=\"u9b4607835e6d5fb35ccc0b50a1d62c3c\"><style> .u9b4607835e6d5fb35ccc0b50a1d62c3c { padding:0px; margin: 0; padding-top:1em!important; padding-bottom:1em!important; width:100%; display: block; font-weight:bold; background-color:#eaeaea; border:0!important; border-left:4px solid #34495E!important; text-decoration:none; } .u9b4607835e6d5fb35ccc0b50a1d62c3c:active, .u9b4607835e6d5fb35ccc0b50a1d62c3c:hover { opacity: 1; transition: opacity 250ms; webkit-transition: opacity 250ms; text-decoration:none; } .u9b4607835e6d5fb35ccc0b50a1d62c3c { transition: background-color 250ms; webkit-transition: background-color 250ms; opacity: 1; transition: opacity 250ms; webkit-transition: opacity 250ms; } .u9b4607835e6d5fb35ccc0b50a1d62c3c .ctaText { font-weight:bold; color:#464646; text-decoration:none; font-size: 16px; } .u9b4607835e6d5fb35ccc0b50a1d62c3c .postTitle { color:#000000; text-decoration: underline!important; font-size: 16px; } .u9b4607835e6d5fb35ccc0b50a1d62c3c:hover .postTitle { text-decoration: underline!important; } <\/style><div style=\"padding-left:1em; padding-right:1em;\"><span class=\"ctaText\">See also<\/span>&nbsp; <span class=\"postTitle\">Everything You Need to Know About Power Steering Belts<\/span><\/div><\/a><\/div><\/div>\n\n\n\n<h3 class=\"wp-block-heading\">Contaminants<\/h3>\n\n\n\n<p>If there are any spills under the hood, it can spell disaster for your vehicle&rsquo;s serpentine belt. Leaking coolant or oil can cause the serpentine belt to squeal and slip.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Misalignment<\/h3>\n\n\n\n<p>Damaged pulleys or related accessory components are the most likely causes behind serpentine belt misalignment. That being said, anything that unevenly distributes the load on the serpentine belt can cause it to snap. If one area of the belt is taking on more stress than the others, it&rsquo;s more likely to snap. You&rsquo;ll notice uneven wear on the belt if it&rsquo;s misaligned.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"390\" height=\"1024\" src=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2024\/10\/photo-of-a-misaligned-belt-390x1024.jpg\" alt=\"photo of a misaligned belt\" class=\"wp-image-124586\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2024\/10\/photo-of-a-misaligned-belt-390x1024.jpg 390w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2024\/10\/photo-of-a-misaligned-belt-114x300.jpg 114w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2024\/10\/photo-of-a-misaligned-belt-585x1536.jpg 585w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2024\/10\/photo-of-a-misaligned-belt-150x394.jpg 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2024\/10\/photo-of-a-misaligned-belt.jpg 609w\" sizes=\"(max-width: 390px) 100vw, 390px\"><figcaption class=\"wp-element-caption\">A misaligned belt | Image Source: Richard McCuistian<\/figcaption><\/figure>\n\n\n\n<p>A serpentine belt snapping after around 50,000 miles is in no way uncommon. If it happens while driving, you&rsquo;ll likely need to stop right away as you&rsquo;ll have difficulty turning and your vehicle will lose electrical power. Knowing these potential causes behind a snapped serpentine belt can at least help you avoid that situation.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Incorrect Installation<\/h3>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"624\" height=\"530\" src=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2024\/10\/car-belt-installed-wrong.jpg\" alt=\"car belt installed wrong\" class=\"wp-image-124587\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2024\/10\/car-belt-installed-wrong.jpg 624w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2024\/10\/car-belt-installed-wrong-300x255.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2024\/10\/car-belt-installed-wrong-150x127.jpg 150w\" sizes=\"(max-width: 624px) 100vw, 624px\"><figcaption class=\"wp-element-caption\">This belt<strong><em> <\/em><\/strong>is installed wrong. The belt grooves are supposed to mate with the grooves in the pulley. This belt was mis-routed. | Image Source: Richard McCuistian<\/figcaption><\/figure>\n\n\n\n<p>Improper installation can also cause premature serpentine belt wear. Shoddy work will also affect the belt&rsquo;s performance.<\/p>\n\n\n\n<p>The wrong belt size, incorrect routing along the line, and improper tensioning can all cause the belt to slip. When your vehicle needs a new serpentine belt, hire a trusted mechanic if you aren&rsquo;t confident you can <a href=\"https:\/\/www.carparts.com\/blog\/serpentine-belt-routing-replacement-example-diagram\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"install the belt properly\">install the belt properly<\/a> yourself.<\/p>\n\n\n\n<div class=\"wp-block-data443-irp-shortcode irp-shortcode\"><div style=\"clear:both; margin-top:0em; margin-bottom:1em;\"><a href=\"https:\/\/www.carparts.com\/blog\/p0526-code-cooling-fan-speed-sensor-circuit\/\" target=\"_self\" rel=\"dofollow\" class=\"u400383cda89ff484e890e3144569fc0c\"><style> .u400383cda89ff484e890e3144569fc0c { padding:0px; margin: 0; padding-top:1em!important; padding-bottom:1em!important; width:100%; display: block; font-weight:bold; background-color:#eaeaea; border:0!important; border-left:4px solid #34495E!important; text-decoration:none; } .u400383cda89ff484e890e3144569fc0c:active, .u400383cda89ff484e890e3144569fc0c:hover { opacity: 1; transition: opacity 250ms; webkit-transition: opacity 250ms; text-decoration:none; } .u400383cda89ff484e890e3144569fc0c { transition: background-color 250ms; webkit-transition: background-color 250ms; opacity: 1; transition: opacity 250ms; webkit-transition: opacity 250ms; } .u400383cda89ff484e890e3144569fc0c .ctaText { font-weight:bold; color:#464646; text-decoration:none; font-size: 16px; } .u400383cda89ff484e890e3144569fc0c .postTitle { color:#000000; text-decoration: underline!important; font-size: 16px; } .u400383cda89ff484e890e3144569fc0c:hover .postTitle { text-decoration: underline!important; } <\/style><div style=\"padding-left:1em; padding-right:1em;\"><span class=\"ctaText\">See also<\/span>&nbsp; <span class=\"postTitle\">P0526 Code: Cooling Fan Speed Sensor Circuit<\/span><\/div><\/a><\/div><\/div>\n\n\n\n<h3 class=\"wp-block-heading\">Over-Tensioning<\/h3>\n\n\n\n<p>While incorrect tension in general can cause the serpentine belt to wear down prematurely, it&rsquo;s more likely to snap if it&rsquo;s over-tensioned. An over-tensioned belt is too tight, which places strain on the system and can cause the belt to warp, stretch, or snap. Over-tensioning also affects the pulleys and connected components. Do a routine check on your vehicle&rsquo;s serpentine belt to ensure the tension is correct, and loosen the belt as needed.<\/p>\n\n\n<style>.kadence-column119026_1cda95-ec > .kt-inside-inner-col,.kadence-column119026_1cda95-ec > .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-column119026_1cda95-ec > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column119026_1cda95-ec > .kt-inside-inner-col{flex-direction:column;}.kadence-column119026_1cda95-ec > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column119026_1cda95-ec > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column119026_1cda95-ec{position:relative;}@media all and (max-width: 1024px){.kadence-column119026_1cda95-ec > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column119026_1cda95-ec > 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.kb-image-is-ratio-size{max-width:45px;width:100%;}.wp-block-kadence-column > .kt-inside-inner-col > .kb-image119026_349982-5e.kb-image-is-ratio-size, .wp-block-kadence-column > .kt-inside-inner-col > .kb-image119026_349982-5e .kb-image-is-ratio-size{align-self:unset;}.kb-image119026_349982-5e figure{max-width:45px;}.kb-image119026_349982-5e .image-is-svg, .kb-image119026_349982-5e .image-is-svg img{width:100%;}.kb-image119026_349982-5e .kb-image-has-overlay:after{opacity:0.3;}<\/style>\n<div class=\"wp-block-kadence-image kb-image119026_349982-5e\"><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-column119026_851616-0c > .kt-inside-inner-col,.kadence-column119026_851616-0c > .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-column119026_851616-0c > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column119026_851616-0c > .kt-inside-inner-col{flex-direction:column;}.kadence-column119026_851616-0c > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column119026_851616-0c > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column119026_851616-0c{position:relative;}@media all and (max-width: 1024px){.kadence-column119026_851616-0c > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column119026_851616-0c > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column119026_851616-0c 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>\nThis only happens on engines with a &ldquo;draw bolt&rdquo; and a movable tensioner. It won&rsquo;t happen with a spring loaded automatic tensioner.\n        <\/p>\n    <\/div>\n<\/div>\n<\/div><\/div>\n\n<\/div><\/div><\/div><\/div>\n\n\n\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\"> 4<\/span> <span class=\"rt-label rt-postfix\">minutes<\/span><\/span>Your vehicle&rsquo;s serpentine belt helps transfer power from the engine to various other systems and parts, including the alternator, air&#8230; <a href=\"https:\/\/www.carparts.com\/blog\/why-did-your-vehicles-serpentine-belt-snap\/\" rel=\"nofollow\">Read More<\/a><\/p>\n","protected":false},"author":4,"featured_media":119585,"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":[52,3747],"tags":[1164],"ppma_author":[2607,2985],"class_list":{"0":"post-119026","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-diy","8":"category-engine","9":"tag-serpentine-belt-2","10":"entry"},"acf":{"adrotate_specific_mobile_ad":"","adrotate_specific_desktop_ad":""},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Why Did Your Vehicle\u2019s Serpentine Belt Snap? - In The Garage with CarParts.com<\/title>\n<meta name=\"description\" content=\"If your vehicle\u2019s serpentine belt snaps, it\u2019ll affect a lot of different systems. Here are the common possible causes behind this problem.\" \/>\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\/why-did-your-vehicles-serpentine-belt-snap\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Why Did Your Vehicle\u2019s Serpentine Belt Snap? - In The Garage with CarParts.com\" \/>\n<meta property=\"og:description\" content=\"If your vehicle\u2019s serpentine belt snaps, it\u2019ll affect a lot of different systems. Here are the common possible causes behind this problem.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.carparts.com\/blog\/why-did-your-vehicles-serpentine-belt-snap\/\" \/>\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=\"2024-10-03T06:54:25+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-12-21T03:42:36+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2024\/10\/serpentine-belt-snaps.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=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/why-did-your-vehicles-serpentine-belt-snap\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/why-did-your-vehicles-serpentine-belt-snap\\\/\"},\"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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