{"id":508,"date":"2025-05-07T21:56:52","date_gmt":"2025-05-08T04:56:52","guid":{"rendered":"http:\/\/yingzhangdong.com\/?p=508"},"modified":"2025-05-07T22:12:28","modified_gmt":"2025-05-08T05:12:28","slug":"serpentine-belt-and-idler-pully-troubleshoot-and-replace","status":"publish","type":"post","link":"http:\/\/yingzhangdong.com\/?p=508","title":{"rendered":"Serpentine Belt and Idler Pully Troubleshoot and Replace"},"content":{"rendered":"\n<figure class=\"wp-block-image size-full is-resized\"><img decoding=\"async\" src=\"http:\/\/yingzhangdong.com\/wp-content\/uploads\/2025\/05\/diagram-serpentine_belt.webp\" alt=\"\" class=\"wp-image-519\" style=\"width:346px;height:auto\"\/><\/figure>\n\n\n\n<p>High pitch noise from the front car, especially when cold start. <\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"2016 dodge challenger rt, do you guy what this noise is? #dodge #challenger\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/CiBIwxZ1o_U?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Troubleshooting: \n<ul class=\"wp-block-list\">\n<li>Use stethoscope to touch each pully to find the loudest part. \n<ul class=\"wp-block-list\">\n<li><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"138\" class=\"wp-image-510\" style=\"width: 150px;\" src=\"http:\/\/yingzhangdong.com\/wp-content\/uploads\/2025\/05\/Stethoscope.jpg\" alt=\"\" srcset=\"http:\/\/yingzhangdong.com\/wp-content\/uploads\/2025\/05\/Stethoscope.jpg 429w, http:\/\/yingzhangdong.com\/wp-content\/uploads\/2025\/05\/Stethoscope-300x277.jpg 300w, http:\/\/yingzhangdong.com\/wp-content\/uploads\/2025\/05\/Stethoscope-1x1.jpg 1w\" sizes=\"(max-width: 150px) 100vw, 150px\" \/><\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>remove the belt, move pully side to side to see if there&#8217;s any play. Water pump and idler pully shouldn&#8217;t have any significant play to it. <\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>Caution: perform the check and replacement when the engine is cold. The water pump could be very hot after the car been running for a while. <\/li>\n\n\n\n<li>Tools: \n<ul class=\"wp-block-list\">\n<li>Serpentine belt bent tool. \n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/www.amazon.com\/dp\/B06X3VZNDD?ref=ppx_yo2ov_dt_b_fed_asin_title\">https:\/\/www.amazon.com\/dp\/B06X3VZNDD?ref=ppx_yo2ov_dt_b_fed_asin_title<\/a><\/li>\n\n\n\n<li><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"129\" class=\"wp-image-511\" style=\"width: 150px;\" src=\"http:\/\/yingzhangdong.com\/wp-content\/uploads\/2025\/05\/serpentine_bent_tool.jpg\" alt=\"\" srcset=\"http:\/\/yingzhangdong.com\/wp-content\/uploads\/2025\/05\/serpentine_bent_tool.jpg 677w, http:\/\/yingzhangdong.com\/wp-content\/uploads\/2025\/05\/serpentine_bent_tool-300x259.jpg 300w, http:\/\/yingzhangdong.com\/wp-content\/uploads\/2025\/05\/serpentine_bent_tool-1x1.jpg 1w\" sizes=\"(max-width: 150px) 100vw, 150px\" \/><\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>Serpentine belt \n<ul class=\"wp-block-list\">\n<li>OEM PN:68495977AA<\/li>\n\n\n\n<li>My purchase: Gates Micro-V Serpentine Belt K060820(<a href=\"https:\/\/www.autozone.com\/featured-parts\/duralast-tensioners-and-gates-belts\/p\/gates-micro-v-serpentine-belt-k060820\/1415905_0_0\">https:\/\/www.autozone.com\/featured-parts\/duralast-tensioners-and-gates-belts\/p\/gates-micro-v-serpentine-belt-k060820\/1415905_0_0<\/a>)<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>Idler pully \n<ul class=\"wp-block-list\">\n<li>OEM PN:4627851AA<\/li>\n\n\n\n<li>My purchase: (<a href=\"https:\/\/www.americanmuscle.com\/challenger-serpentine-belt-idler-pulley-bpa03856.html\">https:\/\/www.americanmuscle.com\/challenger-serpentine-belt-idler-pulley-bpa03856.html<\/a>)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>Steps\n<ul class=\"wp-block-list\">\n<li>Remove shaker hood by removing the 4 bolts near corners. <\/li>\n\n\n\n<li>loosen the clamp of air intake tube near the engine air filter and engine. <\/li>\n\n\n\n<li>Remove electrical connector of the intake temp. <\/li>\n\n\n\n<li>Remove the intake tube (mine comes with resonator)<\/li>\n\n\n\n<li>Put the serpentine bent tool to the tensioner. rotate counterclockwise to loosen the tension on the belt. \n<ul class=\"wp-block-list\">\n<li><img loading=\"lazy\" decoding=\"async\" width=\"200\" height=\"204\" class=\"wp-image-512\" style=\"width: 200px;\" src=\"http:\/\/yingzhangdong.com\/wp-content\/uploads\/2025\/05\/serpentine_bent_tool_use.jpg\" alt=\"\" srcset=\"http:\/\/yingzhangdong.com\/wp-content\/uploads\/2025\/05\/serpentine_bent_tool_use.jpg 668w, http:\/\/yingzhangdong.com\/wp-content\/uploads\/2025\/05\/serpentine_bent_tool_use-295x300.jpg 295w, http:\/\/yingzhangdong.com\/wp-content\/uploads\/2025\/05\/serpentine_bent_tool_use-1x1.jpg 1w\" sizes=\"(max-width: 200px) 100vw, 200px\" \/><\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>Remove the belt. <\/li>\n\n\n\n<li>Visually check the belt to see if there is any crack by bending it backwards. <\/li>\n\n\n\n<li>Remove the bolt on the Idler pully. Remove the Idler pully.<\/li>\n\n\n\n<li>Put on the new Idler pully, put on bolt, torque to 21lb-ft. <\/li>\n\n\n\n<li>put on the belt, follow the diagram below. Make the threads align with the pully. <\/li>\n\n\n\n<li>Put back the intake tube, and connect the intake sensor temp connector. <\/li>\n\n\n\n<li>Run the car. check the belt to see if there&#8217;s any misalignment, check each pully to see if there&#8217;s movement from left to right. <\/li>\n\n\n\n<li>put back the shaker hood. <\/li>\n<\/ul>\n<\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"<p>High pitch noise from the front car, especially when cold start.<\/p>\n","protected":false},"author":1,"featured_media":519,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[12,11],"tags":[],"class_list":["post-508","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-car-stuff","category-other-stuff"],"_links":{"self":[{"href":"http:\/\/yingzhangdong.com\/index.php?rest_route=\/wp\/v2\/posts\/508"}],"collection":[{"href":"http:\/\/yingzhangdong.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/yingzhangdong.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/yingzhangdong.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/yingzhangdong.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=508"}],"version-history":[{"count":7,"href":"http:\/\/yingzhangdong.com\/index.php?rest_route=\/wp\/v2\/posts\/508\/revisions"}],"predecessor-version":[{"id":520,"href":"http:\/\/yingzhangdong.com\/index.php?rest_route=\/wp\/v2\/posts\/508\/revisions\/520"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/yingzhangdong.com\/index.php?rest_route=\/wp\/v2\/media\/519"}],"wp:attachment":[{"href":"http:\/\/yingzhangdong.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=508"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/yingzhangdong.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=508"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/yingzhangdong.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=508"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}