My Buick had stalled occasionally while driving.

Z69RANGER

MEMBER
1990 BUICK CENTURY
208,000 MILES

My Buick had stalled occasionally while driving when cold and I would pull over and restart it. I did a full tune up and replaced the fuel filter also. I noticed when when I gave it a lot of gas to check it stuttered and then smoothed out when I let up on the gas. While pulling out of parking lot, it stalled and would not start. It was towed to shop and I have replaced the crankshaft position sensor, ignition module, the ecu, and checked for spark as well as fuel pressure. There r no codes to be read. It starts and isles fine but now it stalls out when given gas. It stalls whether it is in park or drive but if u give it gas easily it is OK. It has been in 2 shops for 3 weeks. Is there anything else I am missing?

4 Replies

ASEMASTER6371

MECHANIC
52,797 POSTS

What is the fuel pressure?

Roy

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Saturday, April 6th, 2013 AT 3:06 PM

Z69RANGER

MEMBER
7 POSTS

Off the top of my head I do not remember but it was well within specs. We checked the fuel pressure numerous times and it was checked by more than one person. Any other thoughts?

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Monday, April 8th, 2013 AT 3:58 AM

Z69RANGER

MEMBER
7 POSTS

By the way, that was when it was key on only and running but I never checked the fuel pressure regulator. I never thought of it. If the regulator is letting too much fuel into the engine it could cause the same problems I described couldn't it?

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Monday, April 8th, 2013 AT 4:15 AM

Z69RANGER

MEMBER
7 POSTS

I just drove my Buick for the first time in 4+ months today. As u can see on my question everything I replaced. Anyway, all it was is the #1 injector shorting out occasionally. This caused the ignition module to quit and so therefore the car stalled. I replaced the injector and it runs great now.

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Friday, August 9th, 2013 AT 9:33 PM