S2000 Under The Hood S2000 Technical and Mechanical discussions.

Car is shaking....

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Old Jul 18, 2008 | 01:28 PM
  #1  
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Default Car is shaking....

When im letting go of my clutch, it has to go fairly high to start moving and then the car starts shaking (sputtering) like it wants to turn off.

About 3 months ago I changed the flywheel/clutch on the car from stock to ACT.

The car has been doing this for about 9 months now.

Its really starting to annoy me.

I really need some help guys.

Someone had mentioned motor mounts ? or the whole re learning the ecu process?

My friend has the same exact s2k, same yr, and 45k miles with no air pump and he doesn't have this problem at all.

My car is stock now except air pump removed. (It did this when air pump was on aswell)

Please help guys.. i have a my03 with 42k miles (routine maint always completed, every 20k miles.. diff, tranny, new plugs, etc)
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Old Jul 18, 2008 | 05:00 PM
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Are you talking about clutch chatters? The flywheel might have overheated that leaves hot spots on the flywheel cause clutch chaters.i think act's uses honda pressure plates with their clutch disk.
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Old Jul 18, 2008 | 05:15 PM
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Possibly.. But it was doing it stock.

Then I did Act Lightweight flywheel, Act PP, Act Street Disc...

The first week it was fine..

Then it started doing it again when it broke in..
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Old Jul 18, 2008 | 05:37 PM
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if you say it was fine right after the clutch replaced, then it would be your clutch, flywheel etc. if you are talking about vibration at the clutch pedal, you might want to start checking your reservoir fluid level, bleed ,
remove the shift fork and lube it with high temp grease at the tip where the fork touches the throw out bearing. Few ppls don't lube the throw out bearing and main shift spline cause very hard pedal after short period of time. If you are taking about clutch chatters when engaging the clutch, your pressure plate probably overheated, thats not much you can do about it unless you resurface or replace the flywheel/clutch.
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Old Jul 19, 2008 | 07:11 AM
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how would it have overheated in one week of soft driving to break it in?
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Old Jul 19, 2008 | 08:59 AM
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that could cause by driving habit that the clutch is not fully engaged between shifts
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Old Jul 19, 2008 | 03:52 PM
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This is not the case. Any other things possible?
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Old Jul 19, 2008 | 03:56 PM
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How light was the flywheel you had put in? Sounds like you might need a few more rpm to take off as lighter flywheels store less kenetic energy to keep rotating.

The high clutch engagement might just be a adjustment problem.
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Old Jul 19, 2008 | 06:44 PM
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BTW did you grease the shift fork?
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Old Jul 28, 2008 | 03:29 PM
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its a 9lb flywheel now. Im not sure on the adjustment problem. Maybe?

Yes it was greased.

Thanks
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