Drivetrain Clutch, Torque Converter, Transmission, Driveline, Axles, Rear Ends

Trans Knock...?

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Old Aug 5, 2004 | 06:47 PM
  #1  
jpizzzle's Avatar
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Trans Knock...?

Heres me situation:

when my m6 95 z28 is idling in neutral, stick in neutral and clutch out it makes a knocking noise a continuous clunk-clunk-clunk. but when i press down the clutch it makes the noise go away. i think it might affect my driving because the car chugs a little when im about 1/4 throttle. i have no idea what this could be and a shop i went to told me to wait till it gets louder and bring it back...i dont really wanna do that as it may cause more damage. Please i need your expert knowledge...

thanks
Old Aug 5, 2004 | 08:02 PM
  #2  
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Re: Trans Knock...?

As far as i know, this is a normal occurance with 4th gen F bodys (LT1's anyway). I thought that my car was knocking the first time i heard it, then i realized that it only happened in neutral with the clutch disengaged. My clutch is not worn and it doesnt cause any change in acceleration AFAIK.
Old Aug 5, 2004 | 09:11 PM
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From: Under The Hood
Re: Trans Knock...?

Originally Posted by jpizzzle
a shop i went to told me to wait till it gets louder and bring it back...i dont really wanna do that as it may cause more damage. Please i need your expert knowledge...
LOL's how classic is that... "Come back when its damn near totaled so we can charge the SH*t out of you and tell you to buy a new Transmission from us"

Any how... When your in Neutral your your Flywheel/Clutch are spinning freely on your Transmissions input shaft. It shouldn't matter if your clutch is up or down. Those noises might be caused by non Moving parts like the throwout bearing... or clutch fork.


BTW what kind of clutch is it and how many miles are on it???

Last edited by Heatmaker; Aug 5, 2004 at 09:17 PM.
Old Aug 6, 2004 | 03:46 PM
  #4  
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Re: Trans Knock...?

Stock clutch 120k
Old Aug 6, 2004 | 09:17 PM
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Re: Trans Knock...?

120K miles on a stock cutch... your joking right?!?
Old Aug 6, 2004 | 09:20 PM
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Re: Trans Knock...?

I doubt he is, I have 104k on my stocker and it still holds decent.
Old Aug 6, 2004 | 09:28 PM
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Re: Trans Knock...?

Man you guys must be babying the hell out of your cars... That's great though...


but if you have 120 on your Stock clutch and your starting to notice some noises that might be a clue. Even if your clutch is holding nicely some of it's components my not.
Old Aug 8, 2004 | 11:36 AM
  #8  
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Re: Trans Knock...?

well i was told it could be a few things, im definately going to get it checked this week by a different shop tho. it could be a throw out bearing, chipped tooth on a gear or a tranny mount. hopefully none of these cost too much. thanks for all the input.

Thanks
Jon
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