Question about 1990 Buick Regal

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1990 buick regal 3.8L- Backfires, stumbles on acceleration

My regal backfires and stumbles on acceleration. It used to be only uphill, but now anytime i accelerate. Any ideas?

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  • brokedownreg May 30, 2008

    Mechanic said fuel pressure was good, I don't know how much is good. Mechanic doesn't know what is wrong with it either, so after 3 months and $600, I told him to give it back.

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  • Master
  • 625 Answers

Most likelly it is your fuel pump is not puting godd fuel pressure
have the fuel pressure test and if it is low have the fuel pump and filter replaced

Posted on May 28, 2008

  • fernando arevalo May 31, 2008

    ok disconect the oxigen sensors and try driving if that fix the problem then your oxigen sensors are not good, and also if the car has an mass air flow sensor unplug it and try driving it, the mass sensor is locate after the air filter on the big breather hose

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