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MT Grinding on RELEASE of Clutch Pedal

 
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  #1 (permalink)  
Old 24 Jan 2012, 11:00 am
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Cool MT Grinding on RELEASE of Clutch Pedal

Hello all,

2005 Turbo H.O. convertible with 85000 miles and a 5 spped manual.

Traffic light turned green and I released the clutch as normal and *POP* no more normal accelration. In fact, had to push in clutch pedal and slowly coast to the side of the road. Tried to start again and only heard grinding on RELEASE of the clutch.

Towed it home and removed transaxle and replaced Clutch assembly, bled master cyclinder, changed motor mounts, rear main seal, axle seals and inspected axles, bushings, clutch linkage and installed new struts.

After everything was installed and reconnected...problem still exist. Ive been through 140 pages of post and cant find anyone who had an exact experience.

Ideas??
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Old 24 Jan 2012, 11:55 am
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Default Re: MT Grinding on RELEASE of Clutch Pedal

Did you replace the throwout bearing? Should be done whenever you replace a clutch, it's normally the part that causes grinding and noise in a manual tranny. It's on the central shaft and is almost always the first candidate for trouble on a manual transmission.

Which series tranny do you have, the T350 or G288???
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Old 24 Jan 2012, 12:23 pm
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Default Re: MT Grinding on RELEASE of Clutch Pedal

I have the G288 and the clutch was a kit to include the bearing. The new bearing came with the bleed tube attached and thats how I was able to get a good bleed.

Removing the cap from the tranny case provided easy access to the bleed tube. Even while looking through this hole with a flashlight, I can see the clutch rotating with engine running...with a helper slowly trying to engage the clutch the grinding is so rough we push the clutch pedal in to stop the noise to prevent any further damage.
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Old 24 Jan 2012, 07:10 pm
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Unhappy Re: MT Grinding on RELEASE of Clutch Pedal

I assume you still have no acceleration also. The only thing left is the transaxle must has something broke.
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Old 24 Jan 2012, 07:25 pm
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Default Re: MT Grinding on RELEASE of Clutch Pedal

as Busted_PT sead, you have a Busted_PT. sorry I couldn't help myself.
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Old 24 Jan 2012, 08:49 pm
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Default Re: MT Grinding on RELEASE of Clutch Pedal

Quote:
Originally Posted by rayo View Post
as Busted_PT sead, you have a Busted_PT. sorry I couldn't help myself.
Not to make light of ColoPT problems,LLLLLOOOOOLLLLL
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Old 25 Jan 2012, 10:47 am
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Default Re: MT Grinding on RELEASE of Clutch Pedal

True that...heres an update...last night I bled the Master Cylinder at least 100 times...now the bearing is actually moving or engaging (car running) and the grinding is easing up a bit. @Busted_PT yes zero acceleration.

I'll continue to post updates.

Last edited by ColoPT; 25 Jan 2012 at 11:08 am.
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Old 25 Jan 2012, 07:02 pm
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Default Re: MT Grinding on RELEASE of Clutch Pedal

Sorry to hear that. If it wont move in gear its not clutch. You probably have transaxle problems. Keep us posted on your progress. Luck to ya.
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Old 08 Feb 2012, 05:25 pm
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Default Re: MT Grinding on RELEASE of Clutch Pedal

UPDATE and FIX!!!

Turns out that the passenger side axle shaft that is connected to the intermediate shaft grinded out the splines!!!

Go figure, the intermediate shaft has the male splines and they completely disintegrated the inboard bearing housing on the half shaft. The intermediate splines have no damage.

So when you are accelerating and you hear a pop followed by grinding and no forward movement, jack up the front and have someone slowly release the clutch and watch for axle shaft rotation!!!
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Old 08 Feb 2012, 09:15 pm
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Default Re: MT Grinding on RELEASE of Clutch Pedal

Great news! Its always a good idea to check all components before re-installing them. This is a good reminder for us all.
JoeX and cloudhidd3n like this.
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