S2000 Under The Hood S2000 Technical and Mechanical discussions.

is my Clutch dying?

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Old 01-28-2011, 12:03 PM
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recently my clutch pedal started to behave stangly - when i press it at high RPMs during hard acceleration - the very first movement has a "notch".
at low/medium RPM and "easy" driving it's absolutely smooth.

the car has done 54,000km (34,000 miles).
clutch fuild was bled ~8 months ago with DOT4.

is my clutch dying (i don't feel any slipage) or the problem is somewhere else?
Old 01-29-2011, 06:42 AM
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where do i start to check?
Billman, where are you???
Old 01-29-2011, 08:26 AM
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Are you talking about the pedal feel only?
Old 01-29-2011, 10:22 AM
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yes - it's a notch/step at pedal.
sliping/engaging/disengaging - i don't feel any problem.
at least not yet....
Old 01-29-2011, 02:15 PM
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Along those same lines how about if your clutch starts to slip under power and you don't have nearly enough miles or abuse to need a new clutch? Is there something other than the clutch itself that can cause that? No notchiness like OP but symptoms came on suddenly.

62k mi and clutch fluid has been bled/replaced in the past 5k miles.
Old 01-29-2011, 02:51 PM
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Originally Posted by Croc,Jan 28 2011, 01:03 PM
recently my clutch pedal started to behave stangly - when i press it at high RPMs during hard acceleration - the very first movement has a "notch".
at low/medium RPM and "easy" driving it's absolutely smooth.

the car has done 54,000km (34,000 miles).
clutch fuild was bled ~8 months ago with DOT4.

is my clutch dying (i don't feel any slipage) or the problem is somewhere else?
you can pull the slave cylinder and relude the rod, on the earlier model there's a nasty casting line there, some people grind those down for a smoother pedal feel.

try go up hill with high gear at low rpm, the car will bog down big time but check to see if the rpm is making the acceleration, if the rpm goes with much forward motion, you got a slipping clutch.

btw, dot4 for clutch line is way over kill, there never really reach the same operation temp as brake fluid and like all dot4 fluid, they need to be replaced sooner.
Old 01-29-2011, 08:34 PM
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Originally Posted by Wildncrazy,Jan 30 2011, 01:15 AM
Along those same lines how about if your clutch starts to slip under power and you don't have nearly enough miles or abuse to need a new clutch? Is there something other than the clutch itself that can cause that? No notchiness like OP but symptoms came on suddenly.

62k mi and clutch fluid has been bled/replaced in the past 5k miles.
are you talking about slipping clutch at your car?

i think it's normal to change stock clutch at 62k miles.
Old 01-29-2011, 08:42 PM
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Originally Posted by iam7head,Jan 30 2011, 01:51 AM
you can pull the slave cylinder and relude the rod, on the earlier model there's a nasty casting line there, some people grind those down for a smoother pedal feel.

try go up hill with high gear at low rpm, the car will bog down big time but check to see if the rpm is making the acceleration, if the rpm goes with much forward motion, you got a slipping clutch.

btw, dot4 for clutch line is way over kill, there never really reach the same operation temp as brake fluid and like all dot4 fluid, they need to be replaced sooner.
i will try uphill thing - but did recently monutains driving and x-cross and didn't feel slippage.

i thought about slave cylinder rod - but this started suddenly.
when i think what major thing was done just before:
1. engine oil replaced
2. brake system rebleeded
3. coilovers installed
4. alignment redone

doesn't seems to me that any of those should've affect clutch feeling.
am i wrong?
Old 02-01-2011, 02:16 AM
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bump for ideas.
Old 02-01-2011, 03:13 AM
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Pull slave.

grind point off of pushrod.

grease and re-install.


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