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1996 Pontiac Sunfire Possibly need a new ECM?

Tiny
THE_REFUSING
  • MEMBER
  • 1996 PONTIAC SUNFIRE
  • 4 CYL
  • 2WD
  • MANUAL
  • 184,000 MILES
Hi, I was working on my sunfire, I took the right front fender off and then buzzing noise started, coming from behind the glove box. When I put the key in and turn the ignition, all the lights were flashing off and on, then I yanked the computer and plugged it back in, it stopped after a few trys but now when you turn the key nothing happens and the check engine light is on

I used an obdII scanner and it doesnt power up or connect to the car. (Works fine on anyother car)

Any idea as to what I might need to get this car running again?
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Saturday, October 24th, 2009 AT 10:11 AM

3 Replies

Tiny
MATHIASO
  • MECHANIC
  • 1,209 POSTS
I hope you did not disconnect the computer while the key was turn in the ignition. That may damage the computer.
It is same as disconneting the computer without disconnecting the battery first. That cause the computer to fail in most cases
check the computer fuse, there still may be hope.
Let me know
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Saturday, October 24th, 2009 AT 10:22 AM
Tiny
THE_REFUSING
  • MEMBER
  • 2 POSTS
All the fuses under the hood are good and the fuses in the car are good, is that all of them?
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Saturday, October 24th, 2009 AT 10:28 AM
Tiny
MATHIASO
  • MECHANIC
  • 1,209 POSTS
Test any sensor for example the knock sensor or map sensor. Check at PCM if no 5 V reference then PCM faulty.
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Saturday, October 24th, 2009 AT 11:11 AM

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