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-   -   Something's up with my stock clutch (http://www.the370z.com/nissan-370z-general-discussions/96975-somethings-up-my-stock-clutch.html)

wdkwang 10-06-2014 09:33 AM

Something's up with my stock clutch
 
2010 Sports/Touring
44k miles
Stock clutch

I had my clutch adjusted to grab as low as possible when I first got the car and it felt great with it grabbing about an inch off the floor. Understandably, the clutch would grab higher and higher as it wore down (now grabbing about 2" off the floor).

Very randomly over the course of the last 1-1.5 years the clutch has been acting up. When I cold start it, there'd be a lot of play with the clutch pedal. Sometimes I can still put it in gear, sometimes I have to pump away at the clutch for 10 minutes for me to muscle it into gear. When I can get it into gear, the clutch grabs super low, maybe .5" off the floor, which feels nice and race-y but I know that's not necessarily a good sign either. After about 10 minutes of driving, it always returns back to normal. There is no particular pattern of when this happens. It could be 90F or 20F out, it could happen after not driving for a week or it happens just 6-7 hours later. It could not happen for months or it could happen once every 1-2 weeks or so. The clutch fluid was changed roughly around 2 years ago with ATE blue.

kenchan 10-06-2014 09:35 AM

why do u need the clutch to engage so low? :icon08: you probably rode the clutch and wore it out prematurely...
and next your syncro's are probably shot.

the engagement point on the Z is fine. it's just the helper spring you need to remove/replace with a softer one.

Chuck33079 10-06-2014 09:35 AM

$10 says the csc is on its way out.

wdkwang 10-06-2014 09:44 AM

Quote:

Originally Posted by kenchan (Post 2990174)
why do u need the clutch to engage so low? :icon08: you probably rode the clutch and wore it out prematurely...
and next your syncro's are probably shot.

the engagement point on the Z is fine. it's just the helper spring you need to remove/replace with a softer one.

because it's my personal preference for it to grab low. no i don't ride the clutch. give me more credit than that. syncro's are fine.

Quote:

Originally Posted by Chuck33079 (Post 2990175)
$10 says the csc is on its way out.

is there any way to check for myself, and is it covered by nissan's powertrain warranty? i still have it until june 2015 i think. thanks

kenchan 10-06-2014 09:45 AM

check your clutch fluid level...

i mean how can i give you credit if you dont know the basics? :confused: :p

mishuko 10-06-2014 09:51 AM

Everyone rides their clutch a bit to launch and hill start... Unless you're takumi from initial d and you don't need a clutch!

but on a more serious note, check your fluids as mentioned by Ken and go from there.

kenchan 10-06-2014 09:52 AM

Quote:

Originally Posted by mishuko (Post 2990201)
but on a more serious note, check your fluids as mentioned by Ken and go from there.

oh but my car is AT? :confused: <= wdkwang











;) :rofl2: hope you find your problem. :tup:

wdkwang 10-06-2014 09:56 AM

i checked the clutch fluid a few weeks ago and it was still blue and topped off at the appropriate level.

kenchan 10-06-2014 10:21 AM

Quote:

Originally Posted by wdkwang (Post 2990205)
i checked the clutch fluid a few weeks ago and it was still blue and topped off at the appropriate level.

:icon18: GOOD ONE!

MJB 10-06-2014 10:28 AM

Quote:

Originally Posted by wdkwang (Post 2990171)

Very randomly over the course of the last 1-1.5 years the clutch has been acting up. When I cold start it, there'd be a lot of play with the clutch pedal. Sometimes I can still put it in gear, sometimes I have to pump away at the clutch for 10 minutes for me to muscle it into gear.

Hydraulic clutch systems on cars are a very simple design. If you are having trouble getting into a gear, either the syncro for that particular gear is worn, or you do not have enough pressure in the hydraulic system for the csc to be able to push in on the pressure plate enough to fully disengage from the disk. Like Chuck33079 mentioned, the CSC is probably on its last leg.

Chuck33079 10-06-2014 10:29 AM

Quote:

Originally Posted by wdkwang (Post 2990193)
is there any way to check for myself, and is it covered by nissan's powertrain warranty? i still have it until june 2015 i think. thanks

That might be one of the most discussed topics on this site. Even the most cursory search will give you hours of reading.

wdkwang 10-06-2014 10:33 AM

Quote:

Originally Posted by MJB (Post 2990247)
Hydraulic clutch systems on cars are a very simple design. If you are having trouble getting into a gear, either the syncro for that particular gear is worn, or you do not have enough pressure in the hydraulic system for the csc to be able to push in on the pressure plate enough to fully disengage from the disk. Like Chuck33079 mentioned, the CSC is probably on its last leg.

If it's the CSC, then I guess the diagnosis was simple. Just to clear it up, any other time when this doesn't happen or 10 minutes into driving with the problem, everything is back to normal. Clutch engagement is smooth, gear goes right in smooth, like nothing ever happened.

kenchan 10-06-2014 11:58 AM

when was the last time you changed tranny fluid?

wdkwang 10-06-2014 12:14 PM

Quote:

Originally Posted by kenchan (Post 2990428)
when was the last time you changed tranny fluid?

At ~28k miles with redline. That was roughly 2 years ago as well

SouthArk370Z 10-06-2014 12:59 PM

Have you tried flushing the clutch hydraulic system? Sounds like there may be a slight obstruction somewhere. But, more than likely, it's the CSC.


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