{"id":59356,"date":"2020-01-31T11:22:42","date_gmt":"2020-01-31T19:22:42","guid":{"rendered":"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/?p=59356"},"modified":"2020-01-31T11:22:45","modified_gmt":"2020-01-31T19:22:45","slug":"wont-go-over-20-mph-2002-chevy-blazer-4-3l","status":"publish","type":"post","link":"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/2020\/01\/wont-go-over-20-mph-2002-chevy-blazer-4-3l","title":{"rendered":"Wont go over 20 mph 2002 Chevy Blazer 4.3L"},"content":{"rendered":"<p><img decoding=\"async\" class=\"alignnone size-full wp-image-36033\" src=\"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/wp-content\/uploads\/2016\/03\/2003-chevy-blazer.jpg\" alt=\"Chevy Blazer\" width=\"600\" height=\"315\" srcset=\"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/wp-content\/uploads\/2016\/03\/2003-chevy-blazer.jpg 600w, https:\/\/www.freeautomechanic.com\/mechanic\/forum\/wp-content\/uploads\/2016\/03\/2003-chevy-blazer-300x158.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/p>\n<p>just over 60,000. It had been sitting for 7 years. I have dropped and cleaned the gas tank. Replaced fuel pump and fuel filter. I have also replaced the plugs, wire, cap, rotor and air filter. Then I had to replace the spider injection system since it had sat for so long also replaced the IAC. It will start with little effort and idles around 600. If I give it gas it bogs down i can work the throttle and get it up to 2400-2600 rpm but will not go past that. I drove it up to the gas station and filled it up with mid grade fuel and a bottle of sea foam. Could not get it over 20 mph and any time I got on the throttle it would bog down and try to die. I thought that since it sat so long maybe the muffler had something living in it so I disconnected it and still no change. Then I am at a complete loss on what to do next. I ran codes and had the P0300 after driving it but since I cleared it; it hasn&#8217;t come back maybe because it hasn&#8217;t left the garage since I don&#8217;t know. Any help would be greatly appreciated.<\/p>\n<hr \/>\n<hr \/>\n<p>I am thinking a vacuum leak or faulty <a href=\"https:\/\/www.freeautomechanic.com\/maf-mass-air-flow-sensor.html\">MAF Sensor.<\/a><\/p>\n<h3>Mass Airflow Sensor Handling Notice<\/h3>\n<ul>\n<li>Handle the MAF sensor carefully.<\/li>\n<li>Do not drop the MAF sensor in order to prevent damage to the MAF sensor.<\/li>\n<li>Do not damage the screen located on the air inlet end of the MAF.<\/li>\n<li>Also Do not touch the sensing elements.<\/li>\n<li>Do not allow solvents and lubricants to come in contact with the sensing elements.<\/li>\n<li>Use a small amount of a soap based solution in order to aid in the installation.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>just over 60,000. It had been sitting for 7 years. I have dropped and cleaned the gas tank. Replaced fuel pump and fuel filter. I have also replaced the plugs, wire, cap, rotor and air filter. Then I had to replace the spider injection system since it had sat for so long also replaced the&hellip;&nbsp;<a href=\"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/2020\/01\/wont-go-over-20-mph-2002-chevy-blazer-4-3l\" rel=\"bookmark\">Read More &raquo;<span class=\"screen-reader-text\">Wont go over 20 mph 2002 Chevy Blazer 4.3L<\/span><\/a><\/p>\n","protected":false},"author":15591,"featured_media":0,"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":[1,3],"tags":[430,401],"class_list":["post-59356","post","type-post","status-publish","format-standard","hentry","category-auto-repair-questions","category-chevy","tag-blazer","tag-maf-sensor"],"_links":{"self":[{"href":"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/wp-json\/wp\/v2\/posts\/59356","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/wp-json\/wp\/v2\/users\/15591"}],"replies":[{"embeddable":true,"href":"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/wp-json\/wp\/v2\/comments?post=59356"}],"version-history":[{"count":0,"href":"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/wp-json\/wp\/v2\/posts\/59356\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/wp-json\/wp\/v2\/media?parent=59356"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/wp-json\/wp\/v2\/categories?post=59356"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/wp-json\/wp\/v2\/tags?post=59356"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}