Haunted 1989 Chevy Cavalier

BIGGIN69

MEMBER
1989 CHEVROLET CAVALIER
6 CYL
2WD
AUTOMATIC
214,000 MILES

1989 cavalier runs about 25 minutes and then just shuts down. Has new coil packs, ign module, ecm, still firing after it shuts down still has correct fuel pressure after shut down, almost new converter, new crank sensor. Im running out of idles, please help?

3 Replies

WRENCHTECH

MECHANIC
20,761 POSTS

If you're sure that you still have spark and correct fuel pressure, that only leaves injector pulse. Use a noid light to test that. If it's injector pulse that you're losing, that tends to point to a bad ECM. You can try tapping on it when the car is running to see if it responds to that but otherwise, it's going to be a difficult thing to confirm.

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Saturday, June 4th, 2011 AT 12:01 PM

BIGGIN69

MEMBER
2 POSTS

Thanks for your responese. Is a noid light a regulur test light, and where do I test the injector, car running or nor running while testing, car had a new pcm a little over a year ago is there a computer other then the one behind the glove box or do they go out that often. I also know that you have to change out the prom chips in the pcm do these ever go bad. Thanks for any help you can give

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Sunday, June 5th, 2011 AT 4:42 AM

WRENCHTECH