1990 PONTIAC GRAND AM RUNNING TERRIBLE

  • Tiny
  • babygirl2800
  • 1990 Pontiac Grand Am
  • 2.3L
  • 4 CYL
  • 2WD
  • automatic
  • 125,000 miles

Its running terrible and when you hit the gas it will backfire I changed the quals and everything thats not it I have no idea what it could be got any suggestions

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Tuesday, June 24th, 2014 AT 3:09 AM

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  • Tiny
  • hmac300
  • Expert
  • 44,378 posts

Scan for codes and check fuel pressure with a gauge first autoparts rent the gauge. Then check compression and look for a vacuum leak

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Tuesday, June 24th, 2014 AT 6:00 AM

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