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91 buick skylark stalls Sign up here! Search this forum this category all forums for All words Any words Whole Phrase (search options) Auto Repair Home>> Automotive Repair>> Engine Troubleshooting pen1255 New User Apr 20, 2009, 2:48 PM Post #1 of 4 (2541 views) 91 buick skylark stalls Sign In 91 buick skylark, 2.5 liter, starts and runs fine for a short distance then stalls, restarts fine and will stay running in park or neutral but when you put it in drive or reverse it stalls immediately...if you let it sit about an hour then it runs fine again for a short distance, then repeats. Clueless here as to what the problem might be, any help would be greatly appreciated. Loren Champlain Sr Veteran / Moderator Apr 20, 2009, 3:51 PM Post #2 of 4 (2536 views) Re: 91 buick skylark stalls Sign In pen; Since it runs okay when cold, I'm suspecting a lean condition or an IAC problem. When the engine is cool, the PCM adds fuel since this is fuel injected. Running rich during the warm up time can mask a vacuum leak or partially plugged filter. I'd recommend checking the fuel filter, first. Could be that simple. Check the engine for vacuum leaks after it's warm. Listen for a hissing sound. The IAC (idle air control) can become dirty and sticky, over time. It's very common for this to happen. The IAC opens and closes (electrical solenoid) to allow air into the system to control idle speed. If the other checks come up negative, have the injection system cleaned. This should be done every 30-40K miles, anyway, so you can look at this as maintenance. If nothing else, you should notice an improvement in fuel economy and performance. (MotorVac fuel system cleaning is best, and should be available at most independent shops or the dealer). Loren SW Washington (This post was edited by Loren Champlain Sr on Apr 22, 2009, 6:03 PM) pen1255 New User Apr 22, 2009, 5:57 PM Post #3 of 4 (2525 views) Re: 91 buick skylark stalls Sign In Appreciate the advice. Do you happen to know where the fuel filter is located on it, been under the car with a small floor jack and was unable to locate it. Loren Champlain Sr Veteran / Moderator Apr 22, 2009, 6:01 PM Post #4 of 4 (2519 views) Re: 91 buick skylark stalls Sign In Should be on the driver's side, ahead of the rear tire. (I hope) Some are closer to the tank. Loren SW Washington   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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