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YOUR RESEARCHClutch whir
Reported or suspected cause
clutch fork pivot bushing falling apart
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Reported cause
Or in the case of my car, it was the clutch fork pivot bushing falling apart, which caused the release fork to push on the throwout bearing at weird angles, which then killed it.
Leading evidence: 'clutch fork pivot bushing falling apart' (1 discussions report identifying this cause; no attributable repair resolution). Across 1 matching discussions, the most frequently mentioned possible cause is 'clutch fork pivot bushing falling apart' (1 discussions; 1 report identifying it and 0 suggest it). The most frequently discussed action is 'Replace clutch, ims and rms' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
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Thought I would update this, as my car was returned in perfect working order yesterday, after a one-day job having replaced the clutch, IMS and RMS.
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clutch fork pivot bushing falling apart
No successful repair reported for this finding.
1
Identified cause
0
Suspected cause
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Discussions that report identifying a cause
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0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
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Reported cause
Or in the case of my car, it was the clutch fork pivot bushing falling apart, which caused the release fork to push on the throwout bearing at weird angles, which then killed it.
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7 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
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Howdy,
Went to take my C4S out for a nice sunny day ride yesterday and when I pressed the clutch pedal to the ground, I heard a new whir or high-pitched whine from the mid- to rear of the car. Pitch decreased as the car warmed up, but never disappeared completely. It really is more of a whir than a whine, and it occurs when the clutch engages (right at the audible "click" when my pedal is depressed about 4/5ths of the way down), and goes away when the pedal is lifted up.
Car has about 38K on it, and is on the original clutch, and I'm thinking this is my "new clutch needed" warning, but before I drive (45 miles) to my shop, I'd just wanted to check that the car is likely safe/fine/won't implode/melt engine or transmission on the way.
Any thoughts?
Thanks,
PJ
A noise such as you describe that appears when the clutch pedal is depressed and goes away when it is released is very often (every time in my (albeit limited) experience) throw out or in the case of the Porsche release bearing related.
The rest of the clutch hardware is probably ok -- with just 35K miles -- but the release bearing based on what you wrote is on its way out.
My '96 Mustang's throwout bearing emitted a horrible squeal every time I depressed the clutch. The clutch action etc. was ok.
I drove 10+ miles from work to the dealer though I didn't realize how many stops there were along the way. Must have been a zillion and at every one when I had to depress the clutch to shift into 1st the noise oh man the noise...
My ears still ring from it.
I was kind of tired of the car and had just about made up my mind to get rid of it, so part of that was I didn't care and the other part was I just didn't want to spend the money on a tow.
If I were in a similar situation with my Porsche, and I have been with regards to a noisy water pump, I'd have the car flat bedded to a qualified shop for diagnosis and repair. If the release bearing fails catastrophically serious collateral damage can result. With a nearly 6 year old '96 Mustang with 120K plus miles on its odometer maybe not the end of the world. With a low miles 996 Porsche...
I think Macster is on the money...the clutch release bearing from what you described. It is probably safe to make the drive, but I wouldn't go much further.
Just had the exact same issue with my 02 C4S about a month ago, it's the throwout bearing. Or in the case of my car, it was the clutch fork pivot bushing falling apart, which caused the release fork to push on the throwout bearing at weird angles, which then killed it.
Thought I would update this, as my car was returned in perfect working order yesterday, after a one-day job having replaced the clutch, IMS and RMS. What made the whirring noise was an arm that had lost its "plastic plug," which held it in place. Thanks to Pelican for this image (not mine) of the part itself.
The clutch is now flawless, no noise, engages perfectly and is easy to push down. It's a completely new automobile, and now I get it.
Thanks all.
Of course, I washed, clayed, washed, waxed it today....
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