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99 TA Rear Clunk

This is a discussion on 99 TA Rear Clunk within the Drivetrain forums, part of the LSx Technical Help Section category; Occasionally I can feel a clunk that is coming from the rear end when I accelerate from a dead stop. ...

  1. #1
    pontiac_god
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    99 TA Rear Clunk

    Occasionally I can feel a clunk that is coming from the rear end when I accelerate from a dead stop. Also on the highway this morning at 2500 RPM (automatic) I could accelerate and decelerate back and forth and something is clearly loose back there. I could feel the car pulling - almost as though the axle is loose.

    Any ideas?

  2. #2
    Moo cow f**k milk Demon_Speeding's Avatar
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    Black
    2001 Camaro Z28

    Tighten your lower control arm bolts. After installing my subframe connectors I had the same symptoms on my car. Tightening the LCAs fixed it.

  3. #3
    pontiac_god
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    Control arms are tight; I'm not sure why they would loosen......

  4. #4
    Junior Member alamantia's Avatar
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    1995 Z28 & 2002 Z28

    U-joint?

  5. #5
    99PontTA
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    Quote Originally Posted by pontiac_god
    Occasionally I can feel a clunk that is coming from the rear end when I accelerate from a dead stop. Also on the highway this morning at 2500 RPM (automatic) I could accelerate and decelerate back and forth and something is clearly loose back there. I could feel the car pulling - almost as though the axle is loose.

    Any ideas?
    how long have you owned this car..has it always done it? Try driving any other firebirds? these cars are clunky noisy in the rear...my wifes 99ta clunks like hell when you put it in reverse...and below 40 mph letting on-off the gas it clunks.

  6. #6
    pontiac_god
    Guest
    Quote Originally Posted by Demon_Speeding
    Tighten your lower control arm bolts. After installing my subframe connectors I had the same symptoms on my car. Tightening the LCAs fixed it.

    It was indeed the control arms. I tightened them to 80 ft/lbs...and the clunk in gone. However....I have some "slop" in the differential. With both rear wheels off of the ground, I could move each wheel with a fair amount of movement before the driveshaft moved. Any ideas about that one?

  7. #7
    99PontTA
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    yer god...and you don't know???? dayum..........sucks to be you...maybe keliente can help you figure this mess out.

  8. #8
    Junior Member alamantia's Avatar
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    1995 Z28 & 2002 Z28

    You'd better be able to move the wheels a fair ammount before the drive shaft moves or your gears would be toast, your fine.

  9. #9
    pontiac_god
    Guest
    Quote Originally Posted by 99PontTA
    yer god...and you don't know???? dayum..........sucks to be you...maybe keliente can help you figure this mess out.
    At least I can spell.

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