Question about 1995 Pontiac Grand Am

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95 Pontiac Gran Am-replaced fuel pump but still cannot get sound from the pump as if it is working relay? ???

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  • kentkrumwied Jul 24, 2009

    where is the relay located? this was my first thought though thanx

  • kentkrumwied Jul 24, 2009

    Could a faulty alternator cause a relay safety cut off problem? Was having a problem with low voltage output (only reading about 11 or 12). All the fuses are good...will check other options also thanx

  • kentkrumwied Jul 24, 2009

    Also how do I check power at the pump harness?

  • kentkrumwied Jul 24, 2009

    sorry I meant the alternator.. if it were faulty could that also be a consideration?

  • kentkrumwied Jul 24, 2009

    Even if it had to do with a safety cut off

  • kentkrumwied Jul 24, 2009

    Even if it had to do with a safety cut off

  • kentkrumwied Jul 24, 2009

    Even if it had to do with a safety cut off

  • kentkrumwied Jul 24, 2009

    RE: "The relay should be the center one (of three) attached to the passenger side strut tower." I see "four" wired cubes, is this what you mean? Then which one?

  • kentkrumwied Jul 24, 2009

    No click under the hood when key is turned

  • yadayada
    yadayada May 11, 2010

    do you hear the pump relay under the hood click when you trun the key to on?

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Under the hood in the power distribution box

Posted on Jul 24, 2009

  • yadayada
    yadayada Jul 24, 2009

    NO THE ALT WOULD NOT CAUSE THIS

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Could be the relay, but could also be ignition to the relay, or safety cut off. They use the oil pressure switch or alternator as a fuel pump relay safety cut off.

Posted on Jul 24, 2009

  • Kirk Augustin
    Kirk Augustin Jul 24, 2009

    Could be the relay, but could also be ignition to the relay, or safety cut off. They use the oil pressure switch or alternator as a fuel pump relay safety cut off.

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  • Pontiac Master
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If you have verified that there is no power at pump harness and ground is good, I definitely would check relay and any attending fuses.

Posted on Jul 24, 2009

  • Richard Scordino Jul 24, 2009

    Low voltage at battery can cause a problem...After you get the pump working, get the charging system checked. During testing, make sure you have at least 12 volts in the battery or test results will be incorrect. You should have two leads at the pump harness that have voltage...One has pulsing voltage...ignore that, it's for fuel gauge. One other should have battery voltage with key on. The relay should be the center one (of three) attached to the passenger side strut tower.

  • Richard Scordino Jul 25, 2009

    Just looked at the one I have outside...Never noticed the fourth one but if I remember right, it was the second from the fender side. I think they are all the same part# so in theory, you can try putting another one in it's place..I could be wrong...the last time I needed to mess with them was about a year ago and have done lots in-between!

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If you have 12 volt6s and a GOOD ground, you should have a working pump, if no power, you might have a bad relay or a faulty ignition switch

Posted on Jul 24, 2009

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Possibly,also check fuses

Posted on Jul 24, 2009

  • Joe Alexander
    Joe Alexander Jul 24, 2009

    back probe the plug by using a t-pin on the posive and grounding the test light with the key on

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SOURCE: 95 Pont Gran Am GT 2.4 Quad Replaced: FUEL PUMP

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