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Search Auto Parts Search Slow run down to idle 2.8 '93 s-10 Sign up here!   Email This Post Auto Repair Home>> Truck Repair>> Truck Engine Repair litewerx New User Mar 4, 2012, 8:18 PM Post #1 of 5 (2405 views) Slow run down to idle 2.8 '93 s-10 Sign In My truck has a problem with the idle after it warms up. '93 Chevy S-10, 2.8. I read in an earlier post to check the IAC. Cleaned, then replaced it. It's better but it still takes 15-30 seconds for it to idle down(if it does) when getting to a stop light or stuck in traffic. I have sprayed around the engine with carb cleaner to check for vacuum leaks but found nothing. My mileage has gone from around 17mpg to 10 and @ 4.50 a gallon, it's killing me. Other recent work done was replaced "O"ring on distributor and new valve cover gaskets. It runs well, passed emissions last week but still at a loss. Any help would be greatly appreciated. Thanks. Hammer Time Ultimate Carjunky / Moderator Mar 4, 2012, 8:21 PM Post #2 of 5 (2403 views) Re: Slow run down to idle 2.8 '93 s-10 Sign In It's not just the IAC that you needed to clean. It was the entire throttle body, especially both sides of the throttle plate. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 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. litewerx New User Mar 4, 2012, 8:31 PM Post #3 of 5 (2389 views) Re: Slow run down to idle 2.8 '93 s-10 Sign In Thank you. I didn't see that in what I read before. I will give that a try. Hammer Time Ultimate Carjunky / Moderator Mar 4, 2012, 8:33 PM Post #4 of 5 (2386 views) Re: Slow run down to idle 2.8 '93 s-10 Sign In  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. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 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. litewerx New User Mar 4, 2012, 8:39 PM Post #5 of 5 (2367 views) Re: Slow run down to idle 2.8 '93 s-10 Sign In That sounds pretty do-able. Thanks again. I'll let you know how it turns out.   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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