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Search Auto Parts Search Engine's idling Sign up here!   Email This Post Auto Repair Home>> Automotive World>> General Discussions gustavowoltmann New User Dec 3, 2016, 10:12 AM Post #1 of 4 (1345 views) Engine's idling Sign In My name is Gustavo Woltmann, working with the team of publishers and I have a 1994 Toyota Corolla Gli. I just want to ask regarding my car's idling. Everytime I turn the a/c the idle goes down. What can I do to avoid this? Hammer Time Ultimate Carjunky / Moderator Dec 3, 2016, 1:54 PM Post #2 of 4 (1335 views) Re: Engine's idling Sign In   The AC compressor applies an extra load on the engine which automatically brings the idle down. The computer should automatically bring the idle up a little to compensate for that but there may be issues with the throttle body. You can try this First eliminate all vacuum or air leaks in the system (very important) . You may have a bad IAC ( idle air control) but try 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. Discretesignals Ultimate Carjunky / Moderator Dec 4, 2016, 5:36 PM Post #3 of 4 (1317 views) Re: Engine's idling Sign In Some of the older Toyotas, like yours, has a computer controlled idle up vacuum switching valve for the ac that will open and create bypass air around the throttle to idle the engine up. If the solenoid doesn't open when commanded for some reason, the engine speed won't idle up to compensate for the ac compressor load. It might look something like this. Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved. (This post was edited by Discretesignals on Dec 4, 2016, 5:46 PM) gustavowoltmann New User Dec 5, 2016, 2:03 AM Post #4 of 4 (1297 views) Re: Engine's idling Sign In yes thats exactly what i have here in my car's engine bay. thanks so much, this is a big help for me!   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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