Thread: 3.8 gtp grand prix

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  1. #1 3.8 gtp grand prix 
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    fuel pump issue , *new pump* gets power* wont send gas
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  2. #2 Re: 3.8 gtp grand prix 
    Turbo is the way to go. Fivefingerdeathpunch's Avatar
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    The detail is amazing.

    Can you hot wire the pump to make it pump fuel?

    Is the fuel pump resistor been bypassed to rule that out?

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  3. #3 Re: 3.8 gtp grand prix 
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    yes ive got two of these and swapped both ballasts, and thy both r good, even hotwired it, ive hotwired the pump as well to where it stays on constantly, but it still wont send gas out of the fuel nozzle
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  4. #4 Re: 3.8 gtp grand prix 
    Turbo is the way to go. Fivefingerdeathpunch's Avatar
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    Are you sure nothing is in the fuel line blocking the fuel from reaching the schrader valve on the fuel rail?

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  5. #5 Re: 3.8 gtp grand prix 
    Killa Bee Scottydoggs's Avatar
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    detail is so good cause its his 3 rd post for the same thing.....

    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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  6. #6 Re: 3.8 gtp grand prix 
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    i cant get fuel to come out of the pump at the inittial start, this is before it will even go to the lines, but i have checked the fuel lines and the shrader valve already
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  7. #7 Re: 3.8 gtp grand prix 
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    scott im just trying to get help, if you dont care please dont reply to my posts
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  8. #8 Re: 3.8 gtp grand prix 
    Killa Bee Scottydoggs's Avatar
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    making 3 threads dont help. if we still had mods here two would be deleted already. what it does is pisses people off cause they start to help you and then notice they already did in the first or second thread.

    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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  9. #9 Re: 3.8 gtp grand prix 
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    i have only two idk how to delete
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  10. #10 Re: 3.8 gtp grand prix 
    Killa Bee Scottydoggs's Avatar
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    you cant. in the future just bump the thread, it brings it to the top.

    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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  11. #11 Re: 3.8 gtp grand prix 
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    ah, alright
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  12. #12 Re: 3.8 gtp grand prix 
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    you think there would be any 'kill switches' for the pump?
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  13. #13 Re: 3.8 gtp grand prix 
    Killa Bee Scottydoggs's Avatar
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    you need to test for fuel at the rail, if nothing comes out, the pumps not working right.

    if fuel does come out the injectors might not be firing up. you can pull a injector plug off have a test light ready, have some one turn the key to run while you test for power off the pins inside, it will only flash a few times, it does this to prime the engine as it fires up. so you may have to try a few times to see the test light flash, yes it will flash, thats normal.

    if the plug dont flash, its time to look for a damaged wire.

    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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  14. #14 Re: 3.8 gtp grand prix 
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    I would check the wiring. Is it connected backwards?
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  15. #15 Re: 3.8 gtp grand prix 
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    ive got the wiring correct, it goes A to A and so forth.. but scott a little bit of fuel comes out of the rail when i press down on it, but i needa find a second person to help me with the injector test, ill update as soon as i can
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  16. #16 Re: 3.8 gtp grand prix 
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    update,... so i looked back at the car at some other things , i checked the coils , would i rusted out coul cause a no pressure to go to the pump?
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  17. #17 Re: 3.8 gtp grand prix 
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  18. #18 Re: 3.8 gtp grand prix 
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    ive finally got the car running, but now i have another with the gas gauge, when i unplugged my harness from the other car, i plugged it back into mine and the gauge junped to full and wont move, needle isnt bad its a new pump
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  19. #19 Re: 3.8 gtp grand prix 
    GTP Level Member 231FUN's Avatar
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    Quote Originally Posted by tforet View Post
    ive finally got the car running, but now i have another with the gas gauge, when i unplugged my harness from the other car, i plugged it back into mine and the gauge junped to full and wont move, needle isnt bad its a new pump
    What year is your car? And what year was the car the pump came out of?
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  20. #20 Re: 3.8 gtp grand prix 
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    my car is a 97, its a 97 dephi fuel pump brand new
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