Question about 2000 Buick LeSabre

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2000 buick lesabre sometimes runs fine sometimes not. rough pulsating idle and stalls when slowing or coming to stop and I already replaced fuel filter. I am having trouble figuring out what the problem is.

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Change the EGR valve and the problem should be a part of the pass..........good plugs and wires............Hope this helps .......common problem .

Posted on Oct 16, 2010

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Posted on Jan 02, 2017

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Buick 2002 lesabre- stalls 1 or 2 a week and starts up.nothing shows in diagnostic code. stalls when slowed or stopped


Have you had it to a shop that has a professional type scan tool that can view engine sensor data parameters ? Do you know what those are ? Idle air control counts , mass air flow sensor data , MAP sensor , TPS - throttle position sensor , crankshaft position sensors , Cam sensors , engine coolant temp , intake air temp etc......

Apr 18, 2017 | 2002 Buick LeSabre

1 Answer

1993 LeSabre- just started running rough mostly when put in reverse or drive. Not so much in park or neutral but a little, maybe cause of higher idle speed in park. Also runs a bit rough at slow speeds....


Sounds like the Torque Converter Lock-up Solenoid is failing. It will cause the car to run rough at slow speeds, and sometimes stall while idling in gear (at a stop sign for example)
To test this, locate the 2 or 3 wire connector on the left side of the transmission (looking at it from the left side of the car, it can be hard to find some times) Disconnect it. If the car runs and drives ok with it unplugged, the Lock Up Solenoid has gone bad. The solenoid itself is inside the valve body, inside the transmission (above the transmission pan)

Aug 24, 2011 | 1993 Buick LeSabre

3 Answers

97 buick lesabre 3.8 Idles rough and stalls out.


Fuel injectors go bad on these engines, you can find re manned ones for 30 bucks. If you have an engine light on get that read. Change your coil/wires/plugs also. Is the lower intake manifold gasket leaking coolant yet? You may want to get that replaced also. Check the TPS too (throttle positioning sensor) those will also cause your engine to act up

May 08, 2010 | 1997 Buick LeSabre

1 Answer

1994 LeSabre, V6 3.8 (150K) is stalling out


sounds like the egr valve is sticking. remove and clean. or a vacuum hose is leaking

Mar 30, 2010 | 1994 Buick LeSabre

1 Answer

Car idles rough in park also runs rough in overdrive


Sometimes a rough idle like that is a fuel filter. As you've already done the plugs and wires the fuel filter would be my next bet.

Mar 15, 2010 | 1993 Buick LeSabre

2 Answers

2000 LeSabre starts but runs very rough and stalls. After


Sounds like the plugs are not firing hot enough on initial start-up. Try a quick spark plug change, and clean throttle body. The gas being injected, isn't being burned fast enough by the plugs, which causes the car to have a hard start-up. You may try a higher octane gas or Lucas injector cleaner with your usual octane rating. Lucas comes in a very small bottle, and works very well in my opinion.

Jan 07, 2010 | 2000 Buick LeSabre

1 Answer

1987 Buick Lesabre T stalling and running rough


I just had the same problem. Replaced the fuel filter,still crappy idle and no acceleration. I replaced the fump pump along with the wiring harness and the fuel pump screen and my cars purrs like a kitten,has back to normal acceleration and idles better than before. Hope this is some sort of help to you. I did it myself. Total cost, a little over $120. Good luck. By the way, your fuel pump should be pushing out about 65 lbs of pressure. is it ???

Apr 08, 2009 | 1987 Buick LeSabre

1 Answer

Rough idle,stalling,trouble code 41


might wanna have a fuel injetors checked

Apr 03, 2009 | 1988 Buick LeSabre

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