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1994 Pontiac Firebird Backfire/Stalls

Tiny
JOHNSON.S85
  • MEMBER
  • 1994 PONTIAC FIREBIRD
  • V8
  • 2WD
  • AUTOMATIC
  • 57,000 MILES
Pontiac Trans AM - GTA - This is a 2nd car to me, as I don't drive it often. I last filled up in January and drove it home. It was probably 6 or so weeks and I took it out again, and after about 5 miles I did a loud backfire and stalled. I started it back up and got to where I was going. It did it on the way home too. It died most of the time when a backfire came, but not always. It has done this while idling or accelarating. When it dies, my RPM's go haywire up and down and a click/buzzing occurs. I have been trying to run the gas out of it, but haven't completed that yet? Could this be bad gas, any more help?
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Monday, April 14th, 2008 AT 2:51 PM

1 Reply

Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS


https://www.2carpros.com/forum/automotive_pictures/62217_95_OlderGM_7.jpg

Cross these two terminals as shown, then turn the key on. Count the flashes, a 22 will flash as 2 flashes then a short pause, then 2 flashes, if more than one code is stored, the pause will be longer. The codes will display three times and end with 12. Write them down and post here. If no codes show...test fuel pressure.
https://www.2carpros.com/car_repair_video/test_fuel_injection_pressure.htm
Go here and checkout our video.
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Monday, April 14th, 2008 AT 3:06 PM

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