{"id":69134,"date":"2022-05-20T02:24:22","date_gmt":"2022-05-20T09:24:22","guid":{"rendered":"https:\/\/blogv2prod.wpenginepowered.com\/blog\/?p=69134"},"modified":"2023-08-17T16:29:55","modified_gmt":"2023-08-17T23:29:55","slug":"the-crankshaft-pulley-what-it-is-and-how-to-tell-if-its-broken","status":"publish","type":"post","link":"https:\/\/www.carparts.com\/blog\/the-crankshaft-pulley-what-it-is-and-how-to-tell-if-its-broken\/","title":{"rendered":"The Crankshaft Pulley: What It Is and How to Tell if It\u2019s Broken"},"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\"> 3<\/span> <span class=\"rt-label rt-postfix\">minutes<\/span><\/span><style>.kadence-column_87cfce-fd > .kt-inside-inner-col{border-top-width:0px;border-right-width:0px;border-bottom-width:0px;border-left-width:0px;}.kadence-column_87cfce-fd > .kt-inside-inner-col,.kadence-column_87cfce-fd > .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_87cfce-fd > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column_87cfce-fd > .kt-inside-inner-col{flex-direction:column;}.kadence-column_87cfce-fd > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column_87cfce-fd > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column_87cfce-fd{position:relative;}@media all and (max-width: 1024px){.kadence-column_87cfce-fd > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column_87cfce-fd > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column inner-column-1 kadence-column_87cfce-fd qk-look-widget\"><div class=\"kt-inside-inner-col\">\n<div class=\"wp-block-ultimate-post-row ultp-block-9ac9da  qk-main-wrap\"><div class=\"ultp-row-wrapper\"><div class=\"ultp-row-content\">\n<div class=\"wp-block-ultimate-post-column ultp-block-c14dad\"><div class=\"ultp-column-wrapper\"><style>.wp-block-kadence-advancedheading.kt-adv-heading_54ffaf-04, .wp-block-kadence-advancedheading.kt-adv-heading_54ffaf-04[data-kb-block=\"kb-adv-heading_54ffaf-04\"]{text-align:center;font-size:20px;font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-heading_54ffaf-04 mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading_54ffaf-04[data-kb-block=\"kb-adv-heading_54ffaf-04\"] 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_54ffaf-04 img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-heading_54ffaf-04[data-kb-block=\"kb-adv-heading_54ffaf-04\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<div class=\"kt-adv-heading_54ffaf-04 summary-title wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading_54ffaf-04\"><span>Summary<\/span><\/div>\n\n\n\n<ul class=\"wp-block-list\"><li>The crankshaft pulley is a mechanical device that drives other vehicle accessories with one or more belts.<\/li><li>A bad crankshaft pulley or harmonic balancer can cause symptoms like engine vibration, abnormal knocking noise, inoperative engine accessories, and engine failure.<\/li><li>Crankshaft pulley replacements range in price from $10 to $400, depending on the pulley type, material, and vehicle compatibility.<\/li><\/ul>\n<\/div><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n\n\n<p>The <a href=\"https:\/\/www.carparts.com\/crankshaft-pulley\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"crankshaft pulley\">crankshaft pulley<\/a> is a mechanical device that is directly connected to the vehicle&rsquo;s <a href=\"https:\/\/www.carparts.com\/crankshaft\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"crankshaft\">crankshaft<\/a>. It typically uses one or more belts to drive other vehicle accessories, such as the <a href=\"https:\/\/www.carparts.com\/power-steering-pump\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"power steering pump\">power steering pump<\/a>, <a href=\"https:\/\/www.carparts.com\/a-c-compressor\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"A\/C compressor\">A\/C compressor<\/a>, and <a href=\"https:\/\/www.carparts.com\/alternator\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"alternator\">alternator<\/a>.<\/p>\n\n\n\n<p>Also, there is usually a <a href=\"https:\/\/www.carparts.com\/harmonic-balancer\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"harmonic balancer\">harmonic balancer<\/a> integrated into or bolted to the crankshaft pulley. The primary purpose of the balancer is to absorb vibrations applied to the engine&rsquo;s crankshaft.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What Are the Symptoms of a Bad Crankshaft Pulley or Harmonic Balancer?<\/h2>\n\n\n\n<p>Having a damaged crankshaft pulley or harmonic balancer can spell trouble for you and your vehicle. Here are some of the most common symptoms of a bad crankshaft pulley that you should watch out for:<\/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\/2022\/05\/crankshaft-pulley-of-an-engine-1024x681.jpg\" alt=\"crankshaft pulley of an engine\" class=\"wp-image-69145\" width=\"1024\" height=\"681\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/05\/crankshaft-pulley-of-an-engine-1024x681.jpg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/05\/crankshaft-pulley-of-an-engine-300x199.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/05\/crankshaft-pulley-of-an-engine-768x510.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/05\/crankshaft-pulley-of-an-engine-600x400.jpg 600w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/05\/crankshaft-pulley-of-an-engine-150x100.jpg 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/05\/crankshaft-pulley-of-an-engine.jpg 1500w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption>The crankshaft pulley is a mechanical device that is directly connected to the vehicle&rsquo;s crankshaft and typically uses one or more belts to drive other vehicle accessories.<\/figcaption><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Irregular and excessive engine vibration<\/strong><\/h3>\n\n\n\n<p>A vehicle&rsquo;s engine can produce a lot of vibrations and movements that can sometimes be harmful to other vehicle components. Engineers design vehicles in a way that reduces these engine vibrations to prevent damage to vital drivetrain and engine components.<\/p>\n\n\n\n<p>The harmonic balancer attached to the crankshaft pulley also minimizes excessive engine vibrations. If it fails, there is nothing to absorb these vibrations. As a result, you might notice excessive shaking and vibrations from your vehicle, especially at high engine speeds.<\/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\">Abnormal knocking noise<\/h3>\n\n\n\n<p>Excessive vibrations can cause excessive noise. One of the symptoms you might encounter when dealing with a bad harmonic balancer is a loud knocking sound coming from the engine.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Inoperative engine accessories<\/strong><\/h3>\n\n\n\n<p>Many engine accessories and components rely on the crankshaft pulley to work. These components include the alternator, steering pump, and A\/C compressor. A faulty crankshaft pulley can cause the alternator to stop working, producing symptoms of a drained car battery.<\/p>\n\n\n\n<p>Aside from the alternator, the power steering pump can also stop working (if your car has hydraulic power steering). This part pumps hydraulic fluid into the steering system to provide steering assist. If left unrepaired, a damaged crankshaft pulley can lead to steering problems and safety issues.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Engine failure<\/strong><\/h3>\n\n\n\n<p>Although the harmonic balancer may seem simple enough, if it fails, it can cause major problems. Without the balancer dampening unwanted crankshaft vibrations, engine failures, such as worn rod bearings and a broken crankshaft, may result.<\/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\/2022\/05\/crankshaft-pulley-1024x681.jpg\" alt=\"old crankshaft pulley\" class=\"wp-image-69144\" width=\"1024\" height=\"681\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/05\/crankshaft-pulley-1024x681.jpg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/05\/crankshaft-pulley-300x200.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/05\/crankshaft-pulley-768x511.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/05\/crankshaft-pulley-600x400.jpg 600w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/05\/crankshaft-pulley-150x100.jpg 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/05\/crankshaft-pulley.jpg 1500w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption>Crankshaft pulley replacements can cost you anywhere from $10 to $400.<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Is It Safe to Drive with a Damaged Crankshaft Pulley or Harmonic Balancer?<\/h2>\n\n\n\n<p>You should not continue to drive with a faulty crankshaft pulley or harmonic balancer. Doing so can cause additional damage to your vehicle and potentially leave you stranded.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What Should You Do When the Crankshaft Pulley Is Damaged?<\/h2>\n\n\n\n<p>If you suspect that something is wrong with your crankshaft pulley or any other engine part, you should stop driving your vehicle immediately to avoid further damage.<\/p>\n\n\n\n<p>Repairing a damaged crankshaft pulley requires special tools and knowledge, which you may lack. If you&rsquo;re not confident in your engine repair know-how, it&rsquo;s best to leave the job to a certified mechanic or technician.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">How Long Does It Take To Replace a Crankshaft Pulley or Harmonic Balancer?<\/h2>\n\n\n\n<p>A typical crankshaft pulley replacement can take anywhere from one to one and a half hours. The duration of repairs depends on a variety of factors, including the type of vehicle and the availability of replacement parts.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">How Much Does a Crankshaft Pulley Replacement Cost?<\/h2>\n\n\n\n<p>Crankshaft pulley replacements can cost you anywhere from $10 to $400, depending on several factors such as pulley type, material, and vehicle compatibility. <a href=\"https:\/\/repairpal.com\/estimator\/crankshaft-damper-replacement-cost#:~:text=Labor%20costs%20are%20estimated%20between,specific%20vehicle%20or%20unique%20location.\" target=\"_blank\" rel=\"noreferrer noopener nofollow\" aria-label=\"Labor can cost you an additional $130 to $160 depending on your location\">Labor can cost you an additional $130 to $160 depending on your location<\/a>.<\/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\"> 3<\/span> <span class=\"rt-label rt-postfix\">minutes<\/span><\/span>The crankshaft pulley is a mechanical device that is directly connected to the vehicle&rsquo;s crankshaft. It typically uses one or&#8230; <a href=\"https:\/\/www.carparts.com\/blog\/the-crankshaft-pulley-what-it-is-and-how-to-tell-if-its-broken\/\" rel=\"nofollow\">Read More<\/a><\/p>\n","protected":false},"author":4,"featured_media":69143,"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":[1830],"ppma_author":[2607,2855],"class_list":{"0":"post-69134","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-diy","8":"category-engine","9":"tag-crankshaft-pulley","10":"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>The Crankshaft Pulley: What It Is and How to Tell if It\u2019s Broken - In The Garage with CarParts.com<\/title>\n<meta name=\"description\" content=\"What\u2019s a crankshaft pulley and how do you know if it\u2019s broken? We\u2019ll answer these questions and more in this brief and informative guide.\" \/>\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\/the-crankshaft-pulley-what-it-is-and-how-to-tell-if-its-broken\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"The Crankshaft Pulley: What It Is and How to Tell if It\u2019s Broken - In The Garage with CarParts.com\" \/>\n<meta property=\"og:description\" content=\"What\u2019s a crankshaft pulley and how do you know if it\u2019s broken? 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