S2000 Under The Hood S2000 Technical and Mechanical discussions.

Clunking sound when coming to a stop in first

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Old Sep 30, 2006 | 07:56 PM
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Default Clunking sound when coming to a stop in first

When decelerating with the clutch pedal pushed in still in first gear there is a shake and clunking noise. I have also noticed a difficulty in downshifting even at lower rpm. I just changed the diff fluid and tranny fluid. Mobil 1 75 90 diff and GM synchromesh in the tranny. I don't know if it is the transmission or the diff or what. Can anybody shed a little light. Thanks alot. James.
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Old Oct 1, 2006 | 10:29 AM
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I had a mechanic friend drive the car and he thinks that the clutch is not disengaging. It does it in any gear when coming to a stop. Anybody ever have this happen?
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Old Oct 1, 2006 | 10:29 AM
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did it happen before the fluid change? If not then i would go back to
Honda MTF....also try a different diff fluid
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Old Oct 1, 2006 | 10:35 AM
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Is it hard to remove from 1st while decelerating with the clutch pushed in?
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Old Oct 1, 2006 | 10:42 AM
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It is not hard to pull out of gear into neutral. It only makes the sound when I am almost at a stop. Sometimes it is hard to put into gear and downshifting is a pain. Accelerating and upshifting is normal most of the time. It doesn't clunk if the car is in Neutral when coming to a stop. I don't think it is the tranny or diff anymore just from what I read about them when they go out.
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Old Oct 1, 2006 | 11:15 AM
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How many miles on your car? When you downshift do you revmatch or do you just let the clutch out?
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Old Oct 1, 2006 | 11:28 AM
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hopefully you don't downshift from 2nd to 1st. i know there are some people that do that, to me it seems it puts too much stress on the tranny. lowest gear i'll downshift is to 2nd and every downshift i d/c and rev match the car.
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Old Oct 1, 2006 | 11:30 AM
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78000 miles.
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Old Oct 1, 2006 | 02:40 PM
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Originally Posted by TRDLiquidSilver,Oct 1 2006, 03:28 PM
hopefully you don't downshift from 2nd to 1st. i know there are some people that do that, to me it seems it puts too much stress on the tranny. lowest gear i'll downshift is to 2nd and every downshift i d/c and rev match the car.
you don't autocross then.... 2nd to 1st shifts are pretty standard stuff.

When did you last replace your clutch fluid, it could be air in those lines. I'd bleed the clutch and go from there.
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Old Oct 1, 2006 | 03:01 PM
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Originally Posted by jesusphish,Oct 1 2006, 03:30 PM
78000 miles.
Thanks.. but the more important question was the downshifting. How do you do it?

If you don't rev match, or if you do and not properley I am willing to guess the spring retainer on your friction disk is broken.

It probalby looks like this
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