Stalls only when warm

MKNG1

MEMBER
2004 BUICK LESABRE
6 CYL
2WD
AUTOMATIC
10,000 MILES

When I start my car in the morning, it starts up no problem. If I run the car and then start it within half an hour or so, it often starts very rough, vibrates and stalls out. This only happens after the car has been on and then turned off. Never when it's started cold. Any ideas?

4 Replies

DOCFIXIT

MECHANIC
18,828 POSTS

Service engine light on? If yes have codes read then psot will advise. If no a diagnostic scan of PCM would help find problem.

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Tuesday, December 2nd, 2008 AT 8:11 AM

MKNG1

MEMBER
2 POSTS

No check engine light. I'll have them do a scan and hopefully that tells us. Thanks.

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Tuesday, December 2nd, 2008 AT 9:21 AM

LORENT

MEMBER
1 POST

I had the exact same issue. After 3 visit to the Buick garage and other " experts" advise I found it was a bad MAP sensors. No codes were ever displayed!

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Wednesday, March 18th, 2020 AT 5:43 AM

ASEMASTER6371

MECHANIC
52,797 POSTS

Good morning,

This could be a spark issue or a fuel delivery issue.

https://www.2carpros.com/articles/engine-stalls

A bad ignition control module will cause this as well as a bad crank sensor.

Both items will not code so old fashion diagnostics has to be done.

If it does not start right back up, it could be fuel delivery and that could indicate a failing fuel pump.

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

If it starts right back up, it is most likely spark related.

Roy

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