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Search Auto Parts Search rpm drop Sign up here!   Email This Post Auto Repair Home>> Automotive World>> General Discussions drives4x4 New User Dec 20, 2012, 9:18 PM Post #1 of 5 (1608 views) rpm drop Sign In I have a 2001 blazer 4x4 that had begun to have rpm drop when put into drive. Drops to about 200 and stalls. This problem is intermittent . What should I check? Thanks. re-tired Veteran / Moderator Dec 20, 2012, 9:45 PM Post #2 of 5 (1585 views) Re: rpm drop Sign In start by cleaning the throttle plate and IAC. LIFE'S SHORT GO FISH Hammer Time Ultimate Carjunky / Moderator Dec 21, 2012, 4:04 AM Post #3 of 5 (1547 views) Re: rpm drop Sign In Let me elaborate a little You may have a bad IAC ( idle air control) but try eliminating any vacuum leaks and cleaning the throttle body first. Remove the intake snorkel, have someone hold the throttle wide open for you and scrub the back side of the throttle plate and surrounding bore with an old tooth brush and some carb cleaner. Be sure to spray some into the small holes next to the throttle plate. That should help stabilize the idle. If it still has a problem, replace the IAC. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional. drives4x4 New User Dec 22, 2012, 11:40 PM Post #4 of 5 (1514 views) Re: rpm drop Sign In Many thanks! I will do this and let you know In Reply To _ drives4x4 New User Dec 22, 2012, 11:43 PM Post #5 of 5 (1513 views) Re: rpm drop Sign In GOING TO TRY THIS! Thanks.   Email This Post   Automotive Repair     Auto Body Repair and Refinishing     Heating or AC Issues     Electrical and Wiring     Brake Systems     Car Stereo Repair Advice     General Discussions     Car Making Funny Noises     Engine Fault Codes     Engine Troubles     Exhaust Systems     Steering and Suspension     Transmission Troubles     Tricks of the Trade Automotive World     General Discussions     Antique Car Talk     Car Shows and Events     The Bargin Bin     Motor Vehicle Inspection     Car Care Tips     Traffic Tickets     Gasoline, Motor Oils, Concept Cars and Engines     Auto Insurance, Financing, Leases, Warranties Truck Repair     General Discussions     Truck Engine Repair     Truck Suspension Repair Motorcycle Repair     General Discussions     Motorcycle Engine Repair CarJunky     Open Posting     Board FAQ's     New Board Suggestions

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