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98 Pontiac Bonneville intermitanly stalls & won't restart

When it stalls, it will crank & not restart. When this happens, power windows won't work, everything else works uninterrupted. Key & ignition have been cleaned, fuel pressure checked several times & crank sensor is changed. I was told to try leaving the key in the on position, with the engine off, for 15 minutes, then try starting it. It started, but most of the time it doesn't stall out in a safe location to do this. Please, does anyone know what the issue is & if so, how to correct it? Thank you very much!!

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Posted on Jan 02, 2017

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SOURCE: 1994 pontiac bonneville fires up but stalls imediatly

WOW a 94 with 46K on it thats rare. Your computer may be bad it sends the pulse to the injector.

Posted on Apr 10, 2009

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SOURCE: Stalling. starts 15 minutes later. runs good for a week.

A friend had a toyota which did the same. The problem was the coil inside the distributor. once he replaced it all was well. The problem was the coil leaking and getting hot and then shutting the engine down. Once it cooled off it would run for about 15 to 30 minutes. He spent several weekends working on it and replacing electronics and finally checked inside the distributor and there was the problem.

Posted on May 29, 2009

skychief2001
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SOURCE: 98 Pontiac Bonneville stalls intermitanly & won't restart....

The key trick involves the security system. If the chip in the key fails, the security system will prevent the engine from starting.
Have you tried a different key ?

Posted on Jul 16, 2013

Testimonial: "This morning, I used the car with another key. I put about 50 miles on it without it stalling. My fingers are crossed that it will be something so simple! Thank you!!"

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1 Answer

I have a 1997 Pontiac Bonneville that is shutting off while I am driving. It eventually starts but it happens over and over. I changed the fuel relay switch but it still happens. what next?


How long since a tune-up? Are there any applicable trouble codes? Some of the national brand auto stores will check codes free. Does it stall at idle or going down the highway?
With extended crank, have a helper crank it while you visually check for spark at the spark plugs. If spark everywhere, use a gage and check proper fuel pressure and check fuel injector pulse.

If injector pulse is missing when problem is ongoing, two things I think of, do you have an rpm signal and security system where applicable. The rpm signal comes from crank sensor. Intermittent problems can be a pain to track. Don't replace anything unless your testing points in that direction.

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98 Pontiac Bonneville stalls intermitanly & won't restart....


The key trick involves the security system. If the chip in the key fails, the security system will prevent the engine from starting.
Have you tried a different key ?

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