Engine stalls intermittently while driving

GARYAE

MEMBER
2001 BUICK REGAL

Six cylinder front wheel drive automatic 150,000 miles.

I have the LS model with 150,000 miles on it (lots of highway driving). Here is my problem; Car starts good and runs fine, but sometimes the car stalls while driving usually when coming to a stop sign or slowing down. It will also stall at idle some times. It always starts. There are no error codes. I have replaced the fuel filter and the fuel pump but the car continues to stall. Any help you can provide would be greatly appreciated.

Friday, August 21st, 2009 AT 10:38 AM

3 Replies

JACOBANDNICKOLAS

MECHANIC
110,176 POSTS

Have you checked for vacuum leaks?

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Friday, September 4th, 2009 AT 8:16 AM

TAKECHARGESARGE

MECHANIC
92 POSTS

Hi GARYAE,

The crankshaft position sensor will cause the engine to stall without warning and yet there is not a trouble code registered on the computer. It will act as if someone turned off the ignition switch.

The cause is most likely high resistance in the sensor circuitry due to heat-sinking. The incidences should be happening at about the same amount of run time so it might happen in any driving condition. Mine was happening at about twenty minutes.

I have not had a stalling problem since changing the crankshaft position sensor. (Three years)

Good Luck,

TakeChargeSarge

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Monday, September 21st, 2009 AT 1:09 AM

SCOTTC622

MEMBER
4 POSTS

Wow! Sounds like your talking about my car, my 2002 Regal did the same thing it turns out the mechanic found that it was my ignition switch. If you do not do anything about it (which I did) it will get worse and when you try starting it, it will sound like your over starting it because you will hear a loud metal scraping and then it will mess with your instrument cluster and temperature control lights when starting it. Just to double check when your car shuts off does it quit running and then the dash lights come back on immediately after stalling? If so it is your ignition switch. I would look into it either way.

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Tuesday, September 29th, 2009 AT 5:08 PM