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New clutch chatter

Tiny
SUPERSAAB
  • MEMBER
  • 2005 CHEVROLET COBALT
  • 2.0L
  • 4 CYL
  • TURBO
  • 2WD
  • MANUAL
  • 150,000 MILES
I just installed a new stage 2 clutch kit about 700 miles ago. I drive without hitting boost for about 500 miles for brake in. I got on it hard the other day and when I got to about 10 psi boost I heard a loud banging sound. Could hear it over my load music. When I got home I realized my clutch was making a lot of noise. It gets better or worse depending on pedal position. I can still shift gears if I don't push the pedal all the way. If I push it all the way down it grinds and can't shift. The chatter is there all the time but like I said it changes depending on pedal position. What could it be? Damper springs? Or something else entirely? Please help.
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Sunday, August 23rd, 2020 AT 6:35 AM

13 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good morning,

Sounds like the pressure plate or the throw-out bearing.

You will need to tear it down and inspect the clutch itself.

https://www.2carpros.com/articles/how-to-replace-a-clutch

Can you upload a video of the noise so I can hear it?

Roy
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Sunday, August 23rd, 2020 AT 6:46 AM
Tiny
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Here is a video. Hopefully you can hear it.
Video (Click to make bigger)
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Sunday, August 23rd, 2020 AT 11:23 AM
Tiny
ASEMASTER6371
  • MECHANIC
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Okay, thanks.

Sounds like the throw-out bearing.

YouTube video for replacement.

https://www.youtube.com/watch?v=6N6b5F2ChyE&t=1819s

Roy
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Sunday, August 23rd, 2020 AT 1:51 PM
Tiny
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  • 19 POSTS
Okay, thanks. I have another kit on the way. Going to tear it back down when it gets here. Hopefully everything in this kit is good. Thanks
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Sunday, August 23rd, 2020 AT 2:00 PM
Tiny
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You are welcome.

Make sure you either have the flywheel cut or replace it.

Roy
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Sunday, August 23rd, 2020 AT 2:19 PM
Tiny
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I replaced it with that last kit. If it got nics I'll figure something out.
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Monday, August 24th, 2020 AT 11:32 AM
Tiny
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Sounds good. I just do not want it to chatter when you let the clutch out.

Roy
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Monday, August 24th, 2020 AT 1:22 PM
Tiny
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I'm really just hoping it not and input shaft bearing. At least you gave me a little piece of mind.
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Monday, August 24th, 2020 AT 1:36 PM
Tiny
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If it was that bearing you would have a roaring noise from the bearing.

Roy
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Monday, August 24th, 2020 AT 1:54 PM
Tiny
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I didn't have any of that. It just popped and now the noise.
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Monday, August 24th, 2020 AT 4:25 PM
Tiny
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Okay, then most likely there is no input bearing damage at all.

Roy
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Monday, August 24th, 2020 AT 4:33 PM
Tiny
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Alright, thanks for the help.
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Monday, August 24th, 2020 AT 4:44 PM
Tiny
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You are welcome.

Always glad to help.

Roy
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Monday, August 24th, 2020 AT 4:54 PM

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