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clutch will not disengage above 4000rpms

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Old 08-30-2008, 01:02 PM
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Default clutch will not disengage above 4000rpms

the clutch has been in the car for about 2000 miles without any issues and one day i just noticed that basically if im above 4000rpms and push the clutch in, it wont disengage until the rpms drop below 4000. im not really sure what it could be. i swapped the clutch disc and that didnt do it, so im thinking master or slave cylindeR? i dont see any leaks from either though. the pressure plate and throwout bearing appeared fine.


Modified by patrick4588 at 5:37 PM 8/30/2008
Old 08-30-2008, 06:32 PM
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Default Re: clutch will not disengage above 4000rpms (patrick4588)

need some help diagnosing guys!
Old 08-30-2008, 08:54 PM
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Default Re: clutch will not disengage above 4000rpms (patrick4588)

Bring it by and let me take a look at it. Thanks!
Old 08-30-2008, 10:59 PM
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Default Re: clutch will not disengage above 4000rpms (patrick4588)

Make sure you don't have any air bubbles in the line then, make sure that your pedal is adjusted correctly according to the manual. MC or the sleeve may be slightly leaking. Check under your dash where the MC is and see if you have any fluid coming out of the rubber boot. Hope that helps.
Old 08-31-2008, 10:41 AM
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Default Re: clutch will not disengage above 4000rpms (jjspec)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jjspec &raquo;</TD></TR><TR><TD CLASS="quote">Bring it by and let me take a look at it. Thanks!</TD></TR></TABLE>

i sent you a pm on MR
Old 08-31-2008, 11:02 AM
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Default Re: clutch will not disengage above 4000rpms (V-SPEC 1)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by V-SPEC 1 &raquo;</TD></TR><TR><TD CLASS="quote">Make sure you don't have any air bubbles in the line then, make sure that your pedal is adjusted correctly according to the manual. MC or the sleeve may be slightly leaking. Check under your dash where the MC is and see if you have any fluid coming out of the rubber boot. Hope that helps.</TD></TR></TABLE>

i have spent a good hour bleeding the line and it doesnt really help. the pedal is adjusted correctly. i dont see any leaks at the mc or sc for that matter. im really lost and getting frustrated
Old 09-01-2008, 07:11 PM
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ttt
Old 09-03-2008, 08:34 AM
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Default Re: clutch will not disengage above 4000rpms (patrick4588)

could the transmission be the issue causing the clutch to not disengage?
Old 09-03-2008, 08:47 PM
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i wonder if my flywheel bolts backed out some? i cant believe i forgot to check them when i dropped the transmission last week. but them being even a little loose could cause all kinds of havoc
Old 09-07-2008, 08:53 PM
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Default Re: (patrick4588)

ttt
Old 09-08-2008, 04:26 PM
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Default Re: (patrick4588)

Could be that your disc is super dry and not disengaging enough from the flywheel when shifting.

Did you lube your disc splines/mainshaft upon installation??
Old 09-09-2008, 05:27 PM
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i didnt lube the mainshaft, but it is a new disc
Old 09-10-2008, 10:11 AM
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Default Re: (patrick4588)

Did you take it over to Jimmy? Hit me up and let me know what's up.

Chris H.
Old 09-17-2008, 11:29 AM
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between school and work, i havent had time to take it over to him. its getting worse though; im getting more and more vibration in the clutch pedal. i may try swapping the master and slave cylinder, they are a lot easier than dropping the transmission again
Old 09-17-2008, 12:03 PM
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Default Re: (patrick4588)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by patrick4588 &raquo;</TD></TR><TR><TD CLASS="quote">between school and work, i havent had time to take it over to him. its getting worse though; im getting more and more vibration in the clutch pedal. i may try swapping the master and slave cylinder, they are a lot easier than dropping the transmission again </TD></TR></TABLE>

if you're getting more vibration from the pedal, maybe something is loose!!! Could be flywheel or pressure plate.

And if you have leaks in your clutch hydros, you may not be getting full disengagement!
Old 09-17-2008, 01:01 PM
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i dont think the flywheel or pressure plate is loose, i have swapped the clutch disc since the problem started and nothing changed; so i dont think thats the issue, guess anything is possible though. im not getting disengagement, so thats why im going to try swapping them.
Old 09-18-2008, 04:22 PM
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swapped the slave cylinder, that wasnt the problem. guess ill try the master next. anyone have a brand preference for a master cylinder? oem is like 100, so id prefer to get a cheaper one if they will perform as well.
Old 09-18-2008, 04:25 PM
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Default Re: (patrick4588)

How about 75 plus shipping for OEM Nissin
Old 09-19-2008, 12:01 AM
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Default Re: (patrick4588)

I think the problem is not the disc but the pressure plate. If you have any stock clutch laying around, try changing your PP to stock one. I bet you you're problem is solve. I found that out after taking the tranny 50 million times.
Old 09-19-2008, 07:23 AM
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Default Re: (V-SPEC 1)

like a manufacturing defect or something? it only had about 2500 miles on it before it started acting up
Old 09-19-2008, 11:12 PM
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Default Re: (patrick4588)

what kind of clutch do you have.
Old 09-20-2008, 06:46 AM
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competiton clutch, stage 5. the motor is blown now, so i dont have a way to check anything anymore
Old 09-20-2008, 08:35 PM
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Default Re: (patrick4588)

My friend;s is doing that too. I also would like to see the cure. They replaced his clutch once before because of this same problem.
Old 09-20-2008, 08:39 PM
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replacing the clutch solved his previously? so its probably a clutch issue?
Old 09-21-2008, 01:23 PM
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Default Re: (patrick4588)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by patrick4588 &raquo;</TD></TR><TR><TD CLASS="quote">replacing the clutch solved his previously? so its probably a clutch issue?</TD></TR></TABLE>

well not exactly The change was nominal and the problem has not been cured.


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