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Toofah King Bad
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Severe Clutch Shudder
The 2.5 has developed a bad clutch shudder when downshifting into second. . .bad enough that the rear tires actually chirp and the shifter jumps around alarmingly. On acceleration, there is no problem, even when the clutch is intentionally slipped.
Motor mounts were replaced recently. Clutch is recent, probably less than 10k miles. Confidence in the shop that did the clutch is not very high.
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» 1987 924S Turbo - Got Boost? « "DETERMINATION. Sometimes cars test us to make sure we're worthy. Fix it." - alfadoc |
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08-17-2009, 10:37 AM
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Registered
Join Date: Mar 2006
Location: E.P.,Ill.
Posts: 231
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Did the shop re-surface your flywheel?
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08-17-2009, 11:13 AM
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Toofah King Bad
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Unknown, but I should add that this is a recently developing problem after about two years of driving. Seems like a flywheel problem would have shown immediate symptoms. Or wouldn't it?
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» 1987 924S Turbo - Got Boost? « "DETERMINATION. Sometimes cars test us to make sure we're worthy. Fix it." - alfadoc |
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08-17-2009, 11:19 AM
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Proprietoristicly Refined
Join Date: Jul 2001
Location: ~Carefree Highway~
Posts: 5,833
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Sir Monsta,
Centerforce clutch has a fine PDF and maybe on page 9 ??? or so.... http://media.centerforce.com/DiagGuide/DiagnosticGuide04DL.pdf John_AZ |
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08-17-2009, 11:32 AM
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Toofah King Bad
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Another test drive. Shudder is on decel only, and in second only. . .first and third don't shudder at all, but second shudders so badly it feels like something might break.
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» 1987 924S Turbo - Got Boost? « "DETERMINATION. Sometimes cars test us to make sure we're worthy. Fix it." - alfadoc |
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08-17-2009, 12:24 PM
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Toofah King Bad
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Any more ideas on this? I am not at all eager to drop the drivetrain to inspect the disc after my fun plastic tank conversion. . .
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» 1987 924S Turbo - Got Boost? « "DETERMINATION. Sometimes cars test us to make sure we're worthy. Fix it." - alfadoc |
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08-19-2009, 09:01 AM
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Back from Beyond
Join Date: Nov 2004
Location: Alberta, Canada
Posts: 2,697
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Is it second gear or is it that the difference between engine RPM and TT rpm is most noticeable in second? Can you reproduce it in any other gear by mismatching the engine RPM and the trans speed in other gears? How are your tranny mounts? Did shop change the RMS?
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'88 944 Auto - project, kinda '87 944 Auto - died saving my wife '84 944 5SP - crushed under shop roof during snow storm All others GONE! |
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08-19-2009, 09:57 AM
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Toofah King Bad
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I tried to reproduce it in 1st and 3rd with a similar RPM mismatch, and the clutch engaged smoothly. The car now has a single, center tranny mount with late style crossmember.
I presume the RMS was changed, but I don't have the paperwork, and the shop is now out of business (D'OH!).
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» 1987 924S Turbo - Got Boost? « "DETERMINATION. Sometimes cars test us to make sure we're worthy. Fix it." - alfadoc |
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08-19-2009, 10:01 AM
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Back from Beyond
Join Date: Nov 2004
Location: Alberta, Canada
Posts: 2,697
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Second-gear specific. I'm guessing it's not the clutch then. Tranny twisting maybe? Second gear maybe stuffed. Synchros? Can you get the rear up and run it in second gear and make some checks?
Actually, R, I'm probably not suggesting anything you haven't already thought of...
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'88 944 Auto - project, kinda '87 944 Auto - died saving my wife '84 944 5SP - crushed under shop roof during snow storm All others GONE! Last edited by Slam; 08-19-2009 at 12:22 PM.. |
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08-19-2009, 12:01 PM
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Shaggy
Red
Chumpy
Weiße Scheiße
