Thread: shifting problems

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  1. #1 shifting problems 
    GT Level Member fremmy182's Avatar
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    i have a 00 pontiac grand prix gtp and when i start the car and shift into reverse or drive it clunks very harshly. Then theres other times it does it smooth. Im confused what could be causing this. I have a 130k miles and i changed the tranny fluid at 100k. Anyone have any ideas? thanks
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  2. #2 Re: shifting problems 
    Turbo is the way to go. BillBoost37's Avatar
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    That is typicaly motor mounts. Give them a check over and let us know what you find.
    I drink..so consider that when reading my posts.

    2010 Audi A6 Dual IC's
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  3. #3 Re: shifting problems 
    GT Level Member fremmy182's Avatar
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    the top motor mounts? or the lower one. I actually do have shorter dog bones but i cant tilt the engine back far enough to get the bolts through.. Do you guys have any tricks. i even tried to pry the engine forward with a 2x4 and that wasnt enough
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  4. #4 Re: shifting problems 
    GrandPrix Junkie
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    Lower ones, it's usually the engine mount (under the balancer area) and the trans mount on the drivers side. I'd bet if you leave the hood open and look at the motor when you shift into R or D you will see the engine move quite a bit. If the mounts are covered in a greasy goo, then they're done for.
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  5. #5 Re: shifting problems 
    GT Level Member fremmy182's Avatar
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    how do i replace the lower engine/tranny mount. i dont have an engine hoist
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  6. #6 Re: shifting problems 
    GTP Level Member winterstorm's Avatar
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    wait a minute, did u say that you can bolt the engine into the dogbones? so those arent even attached to the engine?

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  7. #7 Re: shifting problems 
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    I would check the lower control arm bolts too. My car was clunking like crazy going from forward to reverse for the longest time and I could never figure out why, even after new wheel bearings, cv axles and building the trans it still made the same noise and it turned out to be a loose control arm bolt.
    1999 GTP Coupe ------ Comp Cam 76-802-9, 2.7" pulley, S2IC, N*, FWI, SD Headers, DHP Tune, Built trans (single 3.29s, 300m), Magnaflow Catback, 60#injectors, E85, MT ET Street DR's, Fbody brakes, PRJ pump/rails. 302whp/328ft-lbs.......12.41@110mph
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