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knocking noise from the rear

This is a discussion on knocking noise from the rear within the General Help forums, part of the LSx Technical Help Section category; when im driving and let off the gas, i hear a knocking noise coming from the back. it sounds as ...

  1. #1
    Member adham's Avatar
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    knocking noise from the rear

    when im driving and let off the gas, i hear a knocking noise coming from the back.
    it sounds as if something is lose
    at faster speeds, i think i hear it knocking faster
    it is not my exhaust...does anyone know what it could be?
    thanks in advance

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    Car RamRod 98Camarod's Avatar
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    Impounded YoMommasTA's Avatar
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    might be the torsen carrier.try this at about 40 mph let off the gas ,coast and turn the steering wheel to the right, then to the left,then straight.Did you hear the noise and did it change as you moved the wheel? If it did its the torsen normal noise.

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    Senior Member SeVeReDiStOrTiOn's Avatar
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    Could also be a loose caliper. My rear right was making a clanking sound so I replaced the little rubber booty deals.

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    Member adham's Avatar
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    Quote Originally Posted by YoMommasTA View Post
    might be the torsen carrier.try this at about 40 mph let off the gas ,coast and turn the steering wheel to the right, then to the left,then straight.Did you hear the noise and did it change as you moved the wheel? If it did its the torsen normal noise.
    i am almost certain that it is not normal
    i certainly dont here this knocking in my friend's f-body

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    Member adham's Avatar
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    Quote Originally Posted by SeVeReDiStOrTiOn View Post
    Could also be a loose caliper. My rear right was making a clanking sound so I replaced the little rubber booty deals.
    i had my inspection done a few days ago and they checked brakes and all that stuff
    the sound seems like its coming from underneath the car

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    Impounded YoMommasTA's Avatar
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    Quote Originally Posted by adham View Post
    i am almost certain that it is not normal
    i certainly dont here this knocking in my friend's f-body
    i'll tell you what i did shortly after we bought our ta.I went back to the dealer and drove a low mileage ss,it had the EXACT same noise! trust me on this FORGET ABOUT IT AND ENJOY YOUR CAR.I wasted alot of time and money for nothing on my torsen.

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    Member adham's Avatar
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    is yours more noticeable at lower speeds like 25-30
    thats when the knocking seems real bad
    the reason y i brought up this issue is because everyone who rides in my car notices it so i thought it wasnt normal
    well if u r that sure that its not a problem then i will leave it alone
    thanks for everyone's help

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    Impounded YoMommasTA's Avatar
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    Quote Originally Posted by adham View Post
    is yours more noticeable at lower speeds like 25-30
    thats when the knocking seems real bad
    the reason y i brought up this issue is because everyone who rides in my car notices it so i thought it wasnt normal
    well if u r that sure that its not a problem then i will leave it alone
    thanks for everyone's help
    yep you got it 25-30 its really bad,relax and forget about.You don't want to spend 2k looking for the noise like i did trust me on this.I wish someone hasd warned me about this.I just couldn't believe all that knocking could be normal,But it is.

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    Senior Member SeVeReDiStOrTiOn's Avatar
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    If you have money to burn you can always throw in a strange 12-bolt and you'll never have to worry about it again.

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    I have that noise. Annoys the piss out of me too and my passengers think my car is just another crappy american car because of it. Oh wait, I guess it kinda is..................... but I still love it!

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    Member Allen Wood's Avatar
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    My 99 Z-28 did the same thing, knocking when turning left at slow speed. I changed the gear oil in the diff. and used Royal Purple gear oil with a tube of Gm positive additive. It helped but did not cure the problem. As above live with it until you need a new diff.

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    I had knocking noise from my rear end as well. It also made a kinda clunking noise when slowly turning corners. Wound up have to replace the whole rear end...axles and all. Good luck,

  14. #14
    Impounded YoMommasTA's Avatar
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    i don't care what you replace in the rear,as long as the stock torsen lives in there you're gonna hear that noise.forget about it and enjoy your car! PLUS think about this:even if it does break so what you get it fixed.Why beat your brain about some noise that means nothing.Tell you what go out and beat the living hell outta yer car and see if the rear breaks.I'll bet it doesn't!

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