Thread: What voltage should I see at the fuel pump? (2000 GTP)

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  1. #1 What voltage should I see at the fuel pump? (2000 GTP) 
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    I can't seem to find this info anywhere.

    I just replaced a pump, and was fine for 2 weeks, now back to no start. 1.7v seems far too low. Seems to prime just fine.

    Bypassed resistor, no change.
    Last edited by Y2KGTP; 02-03-2014 at 03:06 PM.
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  2. #2 Re: What voltage should I see at the fuel pump? (2000 GTP) 
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    Time to see why you're not getting full voltage, should only be .3v-.5v less than what it's at the battery. Try putting the negative on a known good ground then see the voltage. If it's a lot better the ground is bad.
    2006 Grand Prix GT S/C 109k - Modded Transgo Shift Kit, Gutted Airbox, Dash Cam, and Inlays. Retros soon to come.
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  3. #3 Re: What voltage should I see at the fuel pump? (2000 GTP) 
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    I also read that an open circuit can also cause the fuel gauge to peg at 100% full also.

    Perhaps I did not need a fuel pump, but can't hurt at 99k miles.

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