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

MJB

The 300zx has the same clutch layout with the line right next to the cat, same with the 350z DE (external slave but clutch line in the same spot)... I don't hear about their CSC going out in record numbers like on here. In fact, the 350z HR and 370 have basically the same csc and both have extremely high failure rates. Like I said before, I believe its the seal within the csc itself. So if its heat related, why aren't guys boiling their clutch fluid when they have a Zspeed HD csc installed? The clutch line is in the same spot, no difference except the csc isn't made out of cheap plastic and uses better seals. But you seem pretty convinced its your fluid that is boiling during normal street driving so have at it. At least you have an extended warranty so when it goes out again Nissan will have to replace it. I had the HD csc installed over 2 years ago and haven't had an issue... Come to think of it, out of the hundreds that have installed the HD csc, I think I've heard of 2 failures.

__________________
09 Nismo #0483 sold. Viper or C7 next time around.

Bananaz

It is the seals on the oem.csc that go bad. Mine was so bad and had so much fluid loss it was slowly dropping out of the trans.. ever since the z speed hd csc no problems. I love it!

__________________

JeMo44

I just had this same issue happen to me yesterday and I'm taking the car in tomorrow since I can't today. Do you guys know if the warranty will cover this issue? I have the extended warranty and maybe this will help?

Bananaz

Yes, this is a warranty item if your warranty is still good. I think it's 5 year or 60k

__________________

JeMo44

Ok thank you... I am slow on work right now and can't purchase the zspeed csc at the moment. Do you know if this issue occurs again, will they recover it as long as I am in warranty? I'd like them to cover the labor and install the zspeed when I have the chance to purchase it.


Sent from my iPhone using Tapatalk

JARblue

A dealer won't install the Zspeed one under warranty - they can only install oem parts under warranty. Also, my dealer and corporate both told me that my CSC would not be covered even under the 60K miles powertrain warranty

That's not to say they won't cover it. Just that they told me in my situation it was extremely unlikely to be covered (because I don't spend a lot of $$$ on maintenance at the dealer). There are a variety of people who have gotten them replaced under warranty.

__________________

JeMo44

So I would just be better off replacing it again through them in the event that it happens again up until my warranty is expired.

JARblue

If it's covered under warranty, that would be my choice. Since I was having to fight with them over coverage, I just went the aftermarket route (Z1CSCEK) and did the work in my garage with some help. My CSC was still good, but I didn't want to risk the failure somewhere in rural Texas with no traffic or cell service. And I really didn't want it to fail and then find out that they won't cover it under warranty and then have to scramble to purchase an aftermarket solution while my DD is out of commission.

__________________

mab864

I just lost clutch pressure for the second time today. First time was @ 4500 miles. I had the car towed to the dealer and they did the GTR brake fluid flush which seem to help temporarily. I just had my clutch pedal go almost to the floor today. Still had some clutch engagement about 1" from the floor so I nursed it into the dealer. I've got 9900 miles on it right now. They are replacing the CSC and CMC this time under warranty. They gave me a car too. I did talk the service manager into allowing me to provide the ZSpeed HD CSC and they will install that. I'm pretty happy about that. Also, ZSpeed rocks. I ordered the HD CSC from them as soon as I got back from the dealer and they already shipped it out. Joe at ZSpeed was super helpful. He seemed to think it was my CMC as the CSC ususally completely fails. Hopefully this will make the hydraulic system more reliable. I'm getting leery of taking the Z on long trips.

__________________

JARblue

How the fvck did you get them to do that when they're covering it under warranty? Which dealer please? I have actually turned down warranty coverage because I didn't want the same crappy OEM part installed on my Z - multiple dealers said they can only install OEM parts under warranty.

__________________

mab864

It's Keifer Nissan in Corvallis Oregon. A little too far from TX. I bought my car there and they've been pretty decent so far. They covered my tow bill on the first clutch issue which I understand some dealers do & some don't. I've heard other people have success with talking service managers into installing the ZSpeed CSC, so I'm not the only one. He just said they wouldn't warranty that part of course, but I don't care about that. I get the ZSpeed CSC tomorrow and I'll take it to the dealership so we'll see how things turn out in about a week. Hopefully they have some decent techs at this dealership. This is the first major work I've had done there.

__________________

JARblue

Yeah I wasn't looking for service from them lol. I just wanted to have the name of a dealer I could mention when I ask to have aftermarket parts installed under warranty coverage. Obviously they wouldn't warranty the aftermarket parts.

__________________

mab864

Back from the dealership today with the new CMC & ZSpeed HD CSC installed. Drives great with excellent pedal feel. Hope she's a little more reliable now. Time will tell. All covered under warranty. Pretty happy.

__________________

Shotta

Has anyone on here had a csc failure after installing the RJM clutch pedal assembly?

I'm just curious if the side to side play in the stock pedal assembly is causing the extra wear and pressure on the csc seals.

__________________
6MT - designed for perfectionists
7AT - designed for enthusiasts

Presto

i will let you know after another 20-30k miles. i installed my RJM pedal @3,500 miles