Question about 1994 Pontiac Grand Am

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Engine starts to cut out at highter RPM's, Mileage 115,000

It is usually when you rev it up & get to certain RMP's, usually the same RPM's, If driving on the highway usually about 70 mph or so. On occasion it has been at the lower RPM's close to idle. But once the car warmed up then the cut out was back up at a higher RPM. I placed new gas treatment & gas in it already no differance. Some people are say the rev meter in the brain other the Throttle position sensor. It seamed to start doing this after it had been sitting for close to a year 1/2. not being ran only started once every few months to keep the battery up (which it did run dead couple of times.

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  • longview Nov 08, 2008

    I never have I have stuck fuel treatment in it & I thought it made a differance at first but then relized that it made no real differance.

  • longview Nov 09, 2008

    I changed the Fuel Filter & no differance. One thing I noticed also is that the power from the stop to the go is not peppy. It slugs down when exellerated. I checked with a local shop & the only one in town that has a machine that will handle that year charges $65 for it. But one thing he said is that if the engine lite don't come on then it won't read in the codes. & the engine light does not come on when the trouble is occuring or otherwise. Except when the car is starting which is normal. So I know it is working.

  • Anonymous Apr 30, 2009

    I have a 94 GA 3.1 with what sounds like the same problem. Changed the fuel filter and did nothing, anyone think maybe fuel pump. (Hope not)

  • yadayada
    yadayada May 11, 2010

    When is the last time you changed the fuel filter, it should be done every 30,000

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  • Pontiac Master
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Change the filter as suggested and let me know if that takes care of it, also you should run a self test of the powertrain control module to see if it has a trouble codes, kragen and other stores like kragen do it for free.

Posted on Nov 09, 2008

  • yadayada
    yadayada Nov 09, 2008

    I think Kragen and Auto Zone will test it for trouble codes for nothing

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