clutch questions
Thread Starter
Racer
Joined: Jan 2012
Posts: 331
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clutch questions
so lately i noticed a couple a sound that occurs sometimes, not every day, but when i start letting go of the clutch (from a stop and in first gear only) there is a squeeking noise like a seal's bark that goes away after it's fully engaged. no lagging or engine stalling or anything. does that mean that the clutch is slipping? what's a slipping clutch feel/sound like?
also, a couple times when i let go of the clutch i hear and feel a loud clicking sound, like a big button popping. occurs here and there. thoughts?
TIA
also, a couple times when i let go of the clutch i hear and feel a loud clicking sound, like a big button popping. occurs here and there. thoughts?
TIA
Race Director
Joined: Sep 2006
Posts: 19,035
Likes: 269
From: Bentonville, AR
so lately i noticed a couple a sound that occurs sometimes, not every day, but when i start letting go of the clutch (from a stop and in first gear only) there is a squeeking noise like a seal's bark that goes away after it's fully engaged. no lagging or engine stalling or anything. does that mean that the clutch is slipping? what's a slipping clutch feel/sound like?
also, a couple times when i let go of the clutch i hear and feel a loud clicking sound, like a big button popping. occurs here and there. thoughts?
TIA
also, a couple times when i let go of the clutch i hear and feel a loud clicking sound, like a big button popping. occurs here and there. thoughts?
TIA
Warm up the engine/drivetrain then in 4th gear at over 3K floor the throttle. If the engine rpms climb out of sync with the vehicle's increase in speed, that's a slipping clutch.
My WAG is what you are hearing is the rivets of the disc contacting the flywheel. A stronger indication of this would be the clutch would be grabby and the car hard to move from a stop smootlhly.
I know of one case in which the rivets worn a groove in the surface of the flywheel and the thing was saved with a resurface.
So, I'd say the clutch is worn to the point it needs renewing but is not slipping. And if you tell me the clutch pedal requires considerable effort to depress well that's just another nail in the clutch's coffin.
The other noise suggests the dual mass feature of the flywheel has failed. A sign of this is when you let the clutch pedal out there's a clunk or some abrupt noise. In neutral at a stop light with the clutch out the thing might clunk a bit but if the engine has a smooth idle maybe not.
Sincerely,
Macster.
Racer
Joined: Aug 2011
Posts: 291
Likes: 17
From: Wisconsin
Interesting, I also just started getting the "seal's bark" noise. It seems to happen when I use just a touch too much throttle. If I concentrate, and do everything 100% perfect, where the vehicle is just on the edge of stalling, it does not happen.
I should mention that I have been driving this car for over a year, and have just started hearing the noise now. Also I have driven sticks for 8+ years, so no, I don't think it's driver error.
I have never heard the other noise you mention.
I should mention that I have been driving this car for over a year, and have just started hearing the noise now. Also I have driven sticks for 8+ years, so no, I don't think it's driver error.
I have never heard the other noise you mention.
Pocket Sand
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Joined: Jul 2004
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From: Ask Rusty Shackleford.
I had this "seal bark" noise from around 45,000-60,000kms before it went away of its own accord. Has something to do with the springs in the clutch. same symptoms as you, on moving from a dead stop, quick squeel when moving off (and since mine is a 99 RWD with the unassisted clutch, i'd get a bit of a pedal jump as well).
Problem actually went away on its own. I just had my transmission out for servicing and clutch replacement since the clutch was slipping (at 80,000KMs...i don't know what that is in American). Clutch wear was extremely even (i had used it almost down to the rivets, but they hadn't started gouging the flywheel yet).
It might be something you can just ignore and deal with when its time to replace your clutch.
YMMV.
Problem actually went away on its own. I just had my transmission out for servicing and clutch replacement since the clutch was slipping (at 80,000KMs...i don't know what that is in American). Clutch wear was extremely even (i had used it almost down to the rivets, but they hadn't started gouging the flywheel yet).
It might be something you can just ignore and deal with when its time to replace your clutch.
YMMV.
Race Director
Joined: Sep 2006
Posts: 19,035
Likes: 269
From: Bentonville, AR
I had this "seal bark" noise from around 45,000-60,000kms before it went away of its own accord. Has something to do with the springs in the clutch. same symptoms as you, on moving from a dead stop, quick squeel when moving off (and since mine is a 99 RWD with the unassisted clutch, i'd get a bit of a pedal jump as well).
Problem actually went away on its own. I just had my transmission out for servicing and clutch replacement since the clutch was slipping (at 80,000KMs...i don't know what that is in American). Clutch wear was extremely even (i had used it almost down to the rivets, but they hadn't started gouging the flywheel yet).
It might be something you can just ignore and deal with when its time to replace your clutch.
YMMV.
Problem actually went away on its own. I just had my transmission out for servicing and clutch replacement since the clutch was slipping (at 80,000KMs...i don't know what that is in American). Clutch wear was extremely even (i had used it almost down to the rivets, but they hadn't started gouging the flywheel yet).
It might be something you can just ignore and deal with when its time to replace your clutch.
YMMV.
I was remiss in not adding my usual caution that regardless of what I think the noise is the car should be checked out a pro.
That clutch pedal pressure effort needs an experienced leg to measure. Every so often I feel the clutch pedal in my Boxster is way too hard to depress but when I have it checked by one of the senior techs it comes back with a no problem found write up.
My imagination coupled with a left leg that very quickly adapts to the much lighter clutch pedal pressure in my Turbo with its power assisted clutch had me envisioning a clutch job when none (so far) is called for.
Sincerely,
Macster.
Pocket Sand
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From: Ask Rusty Shackleford.
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Captain Obvious
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From: Cambridge, Ontario, Canada
Well then, stick you head under the dash and have a look. Probably the pedal bushing is worn a bit.
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Michael S. Palmer
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From: Northern NJ
so lately i noticed a couple a sound that occurs sometimes, not every day, but when i start letting go of the clutch (from a stop and in first gear only) there is a squeeking noise like a seal's bark that goes away after it's fully engaged. no lagging or engine stalling or anything. does that mean that the clutch is slipping? what's a slipping clutch feel/sound like?
also, a couple times when i let go of the clutch i hear and feel a loud clicking sound, like a big button popping. occurs here and there. thoughts?
TIA
also, a couple times when i let go of the clutch i hear and feel a loud clicking sound, like a big button popping. occurs here and there. thoughts?
TIA
https://rennlist.com/forums/996-foru...matically.html
Racer
Joined: Aug 2011
Posts: 283
Likes: 0
so lately i noticed a couple a sound that occurs sometimes, not every day, but when i start letting go of the clutch (from a stop and in first gear only) there is a squeeking noise like a seal's bark that goes away after it's fully engaged. no lagging or engine stalling or anything. does that mean that the clutch is slipping? what's a slipping clutch feel/sound like?
also, a couple times when i let go of the clutch i hear and feel a loud clicking sound, like a big button popping. occurs here and there. thoughts?
TIA
also, a couple times when i let go of the clutch i hear and feel a loud clicking sound, like a big button popping. occurs here and there. thoughts?
TIA
Track Day
Joined: Jun 2012
Posts: 21
Likes: 0
I get this sometimes too. Only happens from a stop in first gear. Its almost like a quick rubbing sound. If I really try hard to release the pedal while pushing the gas in perfect unison, it wont happen. I've driven manuals since I was 16 (I'm 40 now). I've been so worried that its my clutch going, but from what I'm reading, maybe I shouldn't be so concerned? I have a 2000 C2 Cab, and this didn't start happening until I owned the car for about 6 months (had it about a year and a half now)
Last edited by Chomper129; Oct 23, 2012 at 10:11 PM.
Intermediate
Joined: Dec 2004
Posts: 48
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From: Seattle, WA
Ran across this thread while looking up another issue and thought I should comment since no definitive answer was provided.
I had this noise in my 996 two times. It sounds a bit like a slipping belt but with more 'horn' to it. It is the clutch release AKA throwout bearing. Had it replaced once at 25k miles along with a new clutch. It started up again at about 75k miles and was occasionally noticeable until I sold the car at 92k miles. It would come and go depending on the angle of the car (flex in the drive train I suppose?) and only when feathering the clutch out of 1st.
I had this noise in my 996 two times. It sounds a bit like a slipping belt but with more 'horn' to it. It is the clutch release AKA throwout bearing. Had it replaced once at 25k miles along with a new clutch. It started up again at about 75k miles and was occasionally noticeable until I sold the car at 92k miles. It would come and go depending on the angle of the car (flex in the drive train I suppose?) and only when feathering the clutch out of 1st.
