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  1. #1
    GT Level Member Jonarin's Avatar
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    Default 2002 grand prix gt shaking on acceleration

    I have an 02 grand prix gt 3.8l. I bought the car 2 weeks ago, and I keep feeling a shake or vibration when I stop and accelerate from a light. When I give it more gas, it gets worse. Then when I let off the gas it goes away. My mechanic was thinking a bad cv joint or half shafts but it's tight. Any suggestions? Maybe a trasnmission?

  2. #2
    Bastard Admin Reptile's Avatar
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    Default Re: 2002 grand prix gt shaking on acceleration

    He's probably right, even if they do feel tight, that's pretty much a dead giveaway when it does that.

  3. #3
    GT Level Member Jonarin's Avatar
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    Default Re: 2002 grand prix gt shaking on acceleration

    So it's not a transmission issue?

  4. #4
    GT Level Member Jonarin's Avatar
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    Default Re: 2002 grand prix gt shaking on acceleration

    He had it up in the air and he told me and showed me that the right front cv shaft was remanufactured

  5. #5
    Bastard Admin Reptile's Avatar
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    Default Re: 2002 grand prix gt shaking on acceleration

    It's probably not the transmission, when you feel the vibration you'll probably feel it in the steering wheel and in the pedal. Transmissions jerk the whole car back and forth, CV shafts pull the wheel side to side.

  6. #6
    Killa Bee Scottydoggs's Avatar
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    Default Re: 2002 grand prix gt shaking on acceleration

    if the vibration goes away when you let off the gas and coast at speed, thats a bad axle, most of the time you can feel what side it is.

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, 2.8, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW

  7. #7
    GT Level Member Jonarin's Avatar
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    Default Re: 2002 grand prix gt shaking on acceleration

    I feel vibration in my seat, the floor and barely in the steering wheel

  8. #8
    Killa Bee Scottydoggs's Avatar
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    Default Re: 2002 grand prix gt shaking on acceleration

    does it go away when coasting?

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, 2.8, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW

  9. #9
    GT Level Member Jonarin's Avatar
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    Default Re: 2002 grand prix gt shaking on acceleration

    Yes

  10. #10
    Killa Bee Scottydoggs's Avatar
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    Default Re: 2002 grand prix gt shaking on acceleration

    driver side axle swap time then.

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, 2.8, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW

  11. #11
    GT Level Member Jonarin's Avatar
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    Default Re: 2002 grand prix gt shaking on acceleration

    Just the cv shaft?

  12. #12
    Killa Bee Scottydoggs's Avatar
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    Default Re: 2002 grand prix gt shaking on acceleration

    they sell the whole axle. it bolts to the hub then into the tranny.

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, 2.8, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW

  13. #13
    GT Level Member Jonarin's Avatar
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    Default Re: 2002 grand prix gt shaking on acceleration

    Is the whole axle just called the halfshaft

  14. #14
    Killa Bee Scottydoggs's Avatar
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    Default Re: 2002 grand prix gt shaking on acceleration

    cv axle i guess. looks liek this in hand.


    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, 2.8, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW

  15. #15
    Turbo is the way to go. Fivefingerdeathpunch's Avatar
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    Default Re: 2002 grand prix gt shaking on acceleration

    Half shaft is another term for it, as it's not a full length driveshaft.

    It never matters if the cv axle is tight or not, you can't see inside it. The needle bearings are getting smashed around by the balls inside the their pockets.

    SMGPFC Member #1

  16. #16
    GT Level Member Jonarin's Avatar
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    Default Re: 2002 grand prix gt shaking on acceleration

    Now if I replaced it and it still did it, then what would it be

  17. #17
    Killa Bee Scottydoggs's Avatar
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    Default Re: 2002 grand prix gt shaking on acceleration

    its what it is, your mechanic thinks so and we all think so.

    if you ever drove a RWD car with a bad U joint, you'd know what it feels like. aka what your feeling now. theres two U joints in the cv shaft. they go bad and vibrate, just like a U joint on a drive shaft does.

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, 2.8, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW

  18. #18
    GT Level Member Jonarin's Avatar
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    Default Re: 2002 grand prix gt shaking on acceleration

    Alright. I really appreciate everything and I'll keep you guys posted! Probably gonna get done within 2 weeks

  19. #19
    Killa Bee Scottydoggs's Avatar
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    Default Re: 2002 grand prix gt shaking on acceleration

    read the how to. the d/s axle can be a b1tch to pop out. you need a pry bar to pop it out.

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, 2.8, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW

  20. #20
    GT Level Member Jonarin's Avatar
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    Default Re: 2002 grand prix gt shaking on acceleration

    I'm gonna have my mechanic do it. He said the way he does it only takes him about 20 to 30 minutes

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