{"id":79683,"date":"2022-11-06T10:44:31","date_gmt":"2022-11-06T18:44:31","guid":{"rendered":"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/?p=79683"},"modified":"2022-11-06T10:44:37","modified_gmt":"2022-11-06T18:44:37","slug":"pontiac-code-p0303-engine-light-flashing","status":"publish","type":"post","link":"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/2022\/11\/pontiac-code-p0303-engine-light-flashing","title":{"rendered":"Pontiac Code P0303 Engine Light Flashing"},"content":{"rendered":"\n<p>My 2006 Pontiac Grand Prix 3.8 engine light flashing and sputtering when accelerating cylinder 3 misfire code sweet exhaust smell rough when starts<\/p>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<p>Short answer, Blown Head Gasket or Intake Gasket.  <\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><strong><a href=\"https:\/\/www.freeautomechanic.com\/blown-head-gasket.html\">Blown Head Gasket Symptoms<\/a><\/strong><\/li><\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Sweet Smell<\/h3>\n\n\n\n<p>The sweet smell is an indication of engine coolant burning and being passed through the exhaust. Checking your coolant level will give you a better indication of how much you are going through. <\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><strong><a href=\"https:\/\/www.freeautomechanic.com\/how-to-check-fluid-%20levels.html\">How to check your fluid levels<\/a><\/strong><\/li><\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-check-engine-light-flashing\">Check Engine Light Flashing<\/h3>\n\n\n\n<p>Anytime the check engine light is flashing you should pull over and discontinue running the engine until it is repaired. This is to prevent permanent damage that WILL occur otherwise. When the Check Engine Light is Flashing the fuel injector may be disabled for the misfiring cylinder to protect the catalytic converter. <\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Pontiac Code P0303: Cylinder 3 Misfire Detected<\/h3>\n\n\n\n<p>The engines computer uses signals from a couple of sensors to determine when an engine misfire is occurring. it uses the Ignition Control Module and the Camshaft Position Sensor signals to do it. A misfire rate the is high enough can cause the catalytic converter to overheat under certain conditions. <\/p>\n","protected":false},"excerpt":{"rendered":"<p>My 2006 Pontiac Grand Prix 3.8 engine light flashing and sputtering when accelerating cylinder 3 misfire code sweet exhaust smell rough when starts Short answer, Blown Head Gasket or Intake Gasket. Blown Head Gasket Symptoms Sweet Smell The sweet smell is an indication of engine coolant burning and being passed through the exhaust. Checking your&hellip;&nbsp;<a href=\"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/2022\/11\/pontiac-code-p0303-engine-light-flashing\" rel=\"bookmark\">Read More &raquo;<span class=\"screen-reader-text\">Pontiac Code P0303 Engine Light Flashing<\/span><\/a><\/p>\n","protected":false},"author":17401,"featured_media":37392,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"neve_meta_sidebar":"","neve_meta_container":"","neve_meta_enable_content_width":"","neve_meta_content_width":0,"neve_meta_title_alignment":"","neve_meta_author_avatar":"","neve_post_elements_order":"","neve_meta_disable_header":"","neve_meta_disable_footer":"","neve_meta_disable_title":"","footnotes":""},"categories":[1,31],"tags":[],"class_list":["post-79683","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-auto-repair-questions","category-pontiac"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v23.0 (Yoast SEO v27.1.1) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Pontiac Code P0303 Engine Light Flashing - FreeAutoMechanic Advice<\/title>\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.freeautomechanic.com\/mechanic\/forum\/2022\/11\/pontiac-code-p0303-engine-light-flashing\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Pontiac Code P0303 Engine Light Flashing\" \/>\n<meta property=\"og:description\" content=\"My 2006 Pontiac Grand Prix 3.8 engine light flashing and sputtering when accelerating cylinder 3 misfire code sweet exhaust smell rough when starts Short answer, Blown Head Gasket or Intake Gasket. Blown Head Gasket Symptoms Sweet Smell The sweet smell is an indication of engine coolant burning and being passed through the exhaust. 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Blown Head Gasket Symptoms Sweet Smell The sweet smell is an indication of engine coolant burning and being passed through the exhaust. 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