Sticky: (Official) 370Z Clutch Pressure (CSC) Failures

SINISTER

Any symptoms that are typical to look out for? Clutch fluid lower/ leaks/ dirty clutch fluid/sounds from clutch/ Or does it just fail out of the blue and your clutch sticks to the floor?

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Not to be able to stop thinking is a dreadful affliction, but we don't realize this because almost everybody is suffering from it, so it is considered normal.

osburnrs

Mine just left me. No dirty fluid, nothing. I track mine more than street it, so I change the fluid often with Motul 600. Never looked dirty just gets cooked.


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BboyZ

On mine, it happen at 1500 miles.
it just fail out of the blue and your pedal sticks to the floor.
Work around for me to make it to the dealer was pull the pedal up.

SINISTER

Wow ....anyone else had symptoms like I mentioned in post #1691?

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Not to be able to stop thinking is a dreadful affliction, but we don't realize this because almost everybody is suffering from it, so it is considered normal.

eastwest2300

its not a matter of if, but a matter of when.. if you're driving a manual.. replace the csc/cmc on YOUR terms, not on your Z's terms.

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Infiniti QX70 & Toyota Supra 3.0 Premium

Initial Z

Mine might have went this week. It has 77k.
My fluid was just at or below the MIN mark.
Pedal had about an inch/ inch and a1/2 of play but not all the time.
It happened mostly at night. Felt like air or moisture in the line. Fluid could have cooked some?

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2011 Gun Metallic 370Z Base w/ Sports Package 6MT
Mods - [K&N Drop in's] [AAM Short tails] [Swift Springs] [H&R Spacers 15mmF 20mmR]

osburnrs

Fill it and bleed it. If that doesn't help, you're probably toast. At 77k on your baby, you just as well change the clutch while you're in there and I would recommend installing the external csc from Z1. Good luck with the repairs but if you got 77K out of it, you may have set a record!


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eastwest2300

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Infiniti QX70 & Toyota Supra 3.0 Premium

Initial Z

Turns out if was air/moisture in the lines from 77k mile fluid burning off. No leaks and the service bulletin said use GT-R brake fluid. Though I may switch to Motul rbf 600.


I guess it was the equivalent to a baby having gas.

__________________
2011 Gun Metallic 370Z Base w/ Sports Package 6MT
Mods - [K&N Drop in's] [AAM Short tails] [Swift Springs] [H&R Spacers 15mmF 20mmR]

osburnrs

Great news! I run Motul in the entire drive and brakes. Be sure to change that nasty diff oil while you're at it.


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geddit

Had my second replacement for the CSC done today...Keep up the god job NISSAN..

eastwest2300

sh1t.

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Infiniti QX70 & Toyota Supra 3.0 Premium

Vigoss

So, finally I'm here...

My clutch started to lose pressure and usually after a long drive on highway it's not bouncing back. I took it to the dealer. Of course they changed the GTR fluid. I told them it should be the CSC or CMC issue but they said they didn't find any leaking and the service bulletin told them to change the fluid. What I could do...

After changing the fluid, the symptom got better. But the clutch was still soft and the friction point was still low and vague, especially on highway after a long drive. I took it back to the dealer. Maybe because the weather was getting colder, the technician said he couldn't reproduce the issue and refused to admit the soft and vague clutch feel.

So I'm wondering if my symptom is indicating a CSC failure (technician stated no leakage...).

I have 50k on the z, still under a certified pre-owned limited warranty, which is basically the same as the powertrain warranty. But the dealer said CSC was not under my warranty (they said they checked it in the labor opt) but only under gold premium warranty. Does that sound correct?

Thanks in advance!

eastwest2300

I'd be setting a plan of action, i.e. a new upgraded CSC (either from Z1 or Zspeed) a new oem CMC, and if you're into performance mods, look into maybe upgrading your flywheel and clutch..

They've already told you your CSC wasnt covered under warranty (which is utterly ridiculous) and once it fails, they'll only want to replace it with another sh1tty oem one.. so if I were you, I'd be looking for a shop that will install an aftermarket one.. do it now while you're still on the road.

good luck bro.

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Infiniti QX70 & Toyota Supra 3.0 Premium

Misnomer

In June 2015 my CSC died, at 30K miles. From this thread I knew that it was best to proactively replace the CMC at the same time, and the shop I went to swore they replaced the "entire clutch assembly." Every time I asked what "entire assembly" meant they just repeated that it was the whole thing -- everything involving the clutch. (I was very stupid and did not make them give me a detailed receipt/invoice: it just said "heavy duty clutch kit.") I figured I was good for the rest of the car's life.

22K miles and almost exactly two years later -- about 3 months ago -- the pedal started sticking again. The day before I was supposed to drive from DC to Cape Cod. I brought it back to the same shop (because s**t should last longer than two years), and it turns out that "entire clutch assembly" meant "except for the CMC." Most of the staff had turned over, and I had no way to prove that I'd asked about it/been given the impression it was replaced along with the CSC. This time I made them look up the details about what the "heavy duty clutch kit" included and give me a copy along with the invoice for the CMC replacement.

*sigh*