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Automotive Repair Car Troubleshooting Topics   Car Troubleshooting   Engine Troubleshooting   Engine Fault Codes   Electrical and Wiring   Transmission Problems Car Repair Topics   Car Making Noises   Car Stereo Repair   Heating or AC Issues   Motorcycles and ATVs   Tricks of the Trade   Truck Repair Advice Site Options:      Login   Sign up here! Latest Forum Post   1989 toyota pickup 3.0 crank no start I have a 1989 toyota pickup 3.0 crank no...   Strut spring orientation and strut mount tension nut 2017 Nissan rogue awd 2.5 L Put in Monro...   Transmission stuck in part, I have tried everything So I'm working on my elderly fathers 201...   2017 dodge journey LED headlights on/off randomly Year of vehicle 2017 Make of vehicle dod...   Kia Soul starter replacement issues! Okay so my car is a 2010 Kia soul 2.0 en...   Please Help - Knock sound & engine fail Hi all, Hoping to get some insight and ...   multiple warning lights 2013 GMC Terrain 130,000 miles 4 cylinde...   03 alero no low speed blower Good day everyone, I have a 2003 Olds a...   04 Chevy 2500hd tail light issues Help!!! I have changed my combo switch...   1999 Grand Caravan Sport not starting. Hi. I'm new here. I hope someone can hel...

Erratic idle Sign up here! Search this forum this category all forums for All words Any words Whole Phrase (search options) Auto Repair Home>> Automotive Repair>> Car Troubleshooting Rangerj User Oct 3, 2010, 7:42 PM Post #1 of 6 (2713 views) Erratic idle Sign In 1993 Mercury grand Marquis 4.6 auto 95,000 miles. recently the engine will rev up and then down it does this consistently. The car runs fine but I need to fix this issue.I sprayed throttle body cleaner into the TB,but it didn't change the idle.Any tips?Thanks Sidom Veteran / Moderator Oct 3, 2010, 9:39 PM Post #2 of 6 (2710 views) Re: Erratic idle Sign In I would make sure there isn't any vacuum leaks 1st. Then block off the idle air bypass in the throttle body. If the idles goes low and stabilizes you may have a bad IAC motor (idle air control) Rangerj User Oct 4, 2010, 2:33 AM Post #3 of 6 (2703 views) Re: Erratic idle Sign In Thanks Sidom,I will try this. Rangerj User Oct 5, 2010, 7:07 AM Post #4 of 6 (2686 views) Re: Erratic idle Sign In I seafoamed it and the idle has smoothed out. Thanks for the replies. Sidom Veteran / Moderator Oct 5, 2010, 9:23 PM Post #5 of 6 (2676 views) Re: Erratic idle Sign In Glad to hear you got it going....... Thx 4 for taking the time to come back and let us know what fixed it.... Rangerj User Oct 6, 2010, 2:28 AM Post #6 of 6 (2670 views) Re: Erratic idle Sign In You are welcome.Maybe it will help someone else.   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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