Thread: Fuel pump not getting power

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  1. #1 Fuel pump not getting power 
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    So the pump isn't turning on. I can't hear the whine sound from it. I tested one wire and it was at 5 volts or so but the pump wasn't turning on. Is my pump just dead?
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  2. #2 Re: Fuel pump not getting power 
    Killa Bee Scottydoggs's Avatar
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    will it start and stall? if so that the high speed relay gone bad. if its just dead and you tried swapping th erelays in the fuse box already the pump is dead.

    try hitting the bottom of the gas tank with you palm. rather firm, sometimes it will shock the pump back to life. its a temp fix, dont trust it if it fires up after you hit the tank.

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, gen 5 N* 3.0 pulley, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW
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  3. #3 Re: Fuel pump not getting power 
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    Had the start stall thing with mine a few months back. I thought fp also but it was the speed sensor in the front bumper.
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  4. #4 Re: Fuel pump not getting power 
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    Another member posted this same problem and his socket for the relay is worn out. He also had 5V but was actually measuring the sender voltage not the one for the pump.

    Jeff
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  5. #5 Re: Fuel pump not getting power 
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    negative, does not start at all. i've tried that relay trick too, did nothing.
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  6. #6 Re: Fuel pump not getting power 
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    When you tried the relay trick did you check to see if you're getting 12V at the pump?
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  7. #7 Re: Fuel pump not getting power 
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    i did not
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  8. #8 Re: Fuel pump not getting power 
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    will this work as a replacement pump?
    http://www.ebay.com/itm/380876574426...%3AMEBIDX%3AIT
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  9. #9 Re: Fuel pump not getting power 
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    so my pump still isn't getting power, relay trick doesn't work. Fuse isn't blown. Tested the wires all the way till they went into a bigger loom near the front. No power. Hot wired the pump and it turns on fine. Car still won't turn over though.
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  10. #10 Re: Fuel pump not getting power 
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    Sounds like you need to check into that bigger loom near the front. If you cannot check continuity from the fuel pump wire to the relay then you have a break somewhere.

    Jeff
    An engine is an engine no matter the size.... I think Dr. Seuss said that... or maybe it was Big Weld....
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  11. #11 Re: Fuel pump not getting power 
    GT Level Member mguzzo's Avatar
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    did you jumper the fuel pump relay in the underhood fuse box?
    --
    "Silver Bullet" 98 GTP Coupe: Stock, rust free, and broadsided.
    Old '98 GTP Coupe: VS Cam, 3.0, S2IC, 42.5#, TOGs, N*/LQ4, Corsa. it once ran a 13 flat
    Older '98 GTP Sedan: Pullied, rockered, SSIC, etc. Stock 14.33 @ 96.5 / PB: 13.89 @ 101
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  12. #12 Re: Fuel pump not getting power 
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    yes, I tried that guzzo
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