Question about 1991 Buick LeSabre

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I have a 91 buick lesabre and it jerks and drives rough at excess speeds of 45, the engine light comes on and i have replaced the coil pack and module, plugs wires and alternator, and throttle sensor, but still no solution

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Could it possible be the o2 sensor check them out, they could clogging, and give the fuel injectors not enough of a pulse to get enough gas out for the ammount of o2

Posted on Mar 18, 2009

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1 Answer

I change coil pack,transmission speed sensor but the engine still in rough idle


Would search first inlet air leak in between air box and engine - all hoses on, clamps tight no cracks
then disconnect idler control - about where the engine accelerate cable comes in / most probably opposite. Problem still there?
look for ignition - plugs, check leads with multimeter, connections

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Buick Lesabre 1999 - 3800 my 1 & 4 coil pack not firing why?


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Buick 97 lesabre, runs rough when warm


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2000 ford taurus jerks at driving speeds, and stalls when i come to a stop can anyone give suggestions


If you run the OBD II codes,it'll give you an idea. I would suspect the usual offenders......old spark plugs,wiring,or coil pack problem.
An EGR can cause jerking and dying, but so can a vacuum leak,usually accompanied by rough idle before the engine dies.
I just did my sister-in-law's plugs,wiring, and coil pack in THAT order,because the code only showed `MISFIRE,cyl. #2.'
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Also,how long since you replaced your fuel filter? don-ohio (:^)

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I have a 95 buick lasbsree it misses at a speed of 45 to 50.im wondering if it could be the fuelinjectors.or what could i do.


SOUNDS LIKE THE SPARK PLUG WIRES OR COIL PACKS,I WOULD CHECK IGNITION SYSTEM FIRST ALWAYS.










TIM.

Dec 16, 2010 | 1995 Buick LeSabre

1 Answer

Hi I have a 1991 Olds Cutlass Supreme, with a 3.1 liter engine. My problem is when the car warms at stops it runs rough. Sometimes shuts off. Sometimes when crusing at speeds 30-50 the car sort of jerks...


My 3.4 liter 91 Cutlass Supreme has similar problem when warm the engine misses (car jerks). But its fine at idle and without any accelerator pressure. The SERVICE ENGINE light also comes on intermittantly. I am going to test the ignition coils.

Oct 25, 2010 | 1991 Oldsmobile Cutlass Supreme

3 Answers

When I pressed on the gas, the car jerked and it


could be bad fuel filter,also check the exhaust flow could be bad catalytic converter.

Jan 12, 2010 | 1995 Buick LeSabre

1 Answer

Smoke coming from the drivers side under hood


could have been a little fulid from somewhere that was burning off.

Jun 02, 2009 | 1994 Buick LeSabre

1 Answer

2001 Buick Lesabre


Do you have check engine light on???if so scan it OBD 2 yue$$ding isn't the way to go,if you don't have a check engine light on then perhaps coil pack!!! coils do run intermittent some times! and not trip the eng light on !!!!this would be a great place to start.Hope this helps

Dec 26, 2008 | 2001 Buick LeSabre

2 Answers

95 Buick Lesabre bucking


Had same kind of problem on my '96 with 254,000 miles only it finally got to where it was not driveable at any speed. Ended up being the fuel pump in the gas tank. You've gotta drop the tank to get to it. You'll need to make sure you clean the accumulated rust and other crud out of the tank. Suggest replacing the pump AND the screen AND the fuel filter while you are at it. All together, the parts ran me about $160.

Nov 14, 2008 | 1995 Buick LeSabre

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