Question about 1991 Buick Regal

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I have a 1991 buick regal stalls and shut off after warming up

I have a 1991 buick regal with a 3.8l engine. My car starts up fine and drives well until it reaches operating temp at which time it stalls and shut off. after waiting for 1-1.5 hours it starts up and runs well but shuts off after a few minutes again. any suggestions?

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Egr valve is not opening up when the engine reaches it normal operating temperture

Posted on Feb 07, 2010

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1 Answer

Why does my 2003 buick regal ls stop ideling afer it warms up?


The automatic idle control valve may have stopped working or the control module that operates it.

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97 buick regal gs runs fine until warm then stalls and will start for more than a second. sometimes when i give it gas it will rev for another second then stall


When the engine warms up the engine computer goes into closed loop mode and relies primarily on the O2 sensors and the MAF sensor to calculate the correct fuel to air mixture - if one of the O2 sensors is fouled or the MAF sensor is not working properly, this can cause the problem.
Given the age of the car, I would also check the idle air control (IAC) and channels, the EGR valve and the throttle body for carbon buildup.

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My 1991 Buick Regal (3.1 engine) use to start a high RPMs and then slowly, as the engine warms up, the RPMs would come down to about 800, which is the normal. However a few weeks ago, it started to start...


Hi,
You need to get your engine coolant thermistor checked and tested. This is what tells the ECM when the engine temperature is at normal working temperature and turns the idle down.
But when the idle won't come down from cold to warm this is usually the main fault.
Hope this helps.
Thanks
Jason

Jan 28, 2011 | 1991 Buick Regal

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I have a 1994 Buick Regal Gran Sport. It will not always start or will start and die immedietly but it will also start and run just fine. It will also just die when you are driving not stall ( you will be...


When my 94 Regal GS frequently wouldn't start for 30 minutes to an hour after being driven, it was the crankshaft positioning sensor that needed to be replaced. I also replaced the harmonic balance pulley. The car ran more smoothly and started everytime.

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99 Regal Shuts off w/ engine at normal temp. Starts when cooled.


sounds like it's tied into the coolant system..

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1991 buick regal starting and running problem


Sounds like your car is overheating. If you have a temp gauge it should show that. If you just have an idiot light, by the time it comes on it's already too hot to operate. AFTER the car is cooled down, open the radiator cap to see how much coolant has been lost. Chances are there is alot missing. Add WATER (no sense in adding coolant if it's going to leak out) and idle the car at home. Look underneath as it warms up to find where the leak is.

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91 buick regal 3.8 car stalled


I have found the most common part failure issue with the ignition system is the crank sensor, also called by some the TDC sensor.

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1999 Buck Regal Stalls While Driving


check ur to see if ur catalytic converter is clogged

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