My Clutch is being weird!

elixxur

So I decided to open up the car on the yesterday since I baby it a tad much. I am the second owner, purchased with 5k miles back in feb, it has 6k now. I didn't ride on the clutch just did normal shifts and revved it to 5-6k on the freeway. Shortly after entering the freeway I noticed my clutch felt looser. In fact, at one point it stuck once to the floor.

After letting my car sit for a bit, the clutch felt a little more tighter, but still not as tight as it did prior to driving fast on the freeway. My friend thinks maybe my pressure plate or ball bearing is messed up, or I have air in line. I've driven at similar speeds in my Abarth and experienced no anomalies like this with the clutch.

Thoughts? Anyone else experience their clutch getting loose?

kenchan

csc

elixxur

http://www.the370z.com/engine-drivet...-failures.html

This affects 2013 models too?

Elan

It affects all models... Nissan needs to seriously do something about it.

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2009 370Z NISMO #477 | AAM Competition Short Tails | AAM Competition HFCs | K&N Typhoon CAI | Kenwood DPX300U | Rockford Fosgate PRIME R300-4 | Rockford Fosgate Punch P165 | Rockford Fosgate Punch P300-12 | Polk Audio db1001 | 15% Tints | GTR Start Button |

elixxur

So I should just replace mine with the Zspeed csc?

Fountainhead

Ah, if your fluid level is not low, and you have weak pedal it's the Master Cylinder, NOT the Slave cylinder. CSC always, always, fail the same way, they lose seal on the O-Rings, and the pedal never comes back. Then the fluid reservoir for the clutch empties because every time you press the pedal, if the CSC is leaking, you're squirting fluid out of the CSC.
Of course your fluid could have gotten hot and boiled a bit, but usually that's indicative of dirty fluid needing cycling/cleaning out.

elixxur

I think it was the fact that it did boil because after letting the car sit for a few more hours it felt a little tighter. I am going to drive it today and see how it goes. I am not going to drive above 62mph or 100kph the metric folks =) I'll estimate what happens and will comment later today..

Thanks for the feedback and help Z family I appreciate it!

Also for the record, the clutch pedal only stuck once. After that it was fine just super loose. My buddy, who owns a g37, drove my car and noticed it was a tad softer than his clutch on the g.

Fountainhead

I would look at the fluid and if it's dirty, follow the "Ranger Protocol". Search Google for those words, I follow cleaning my clutch fluid very closely, if it's not transparent, I swap fluid out.

kenchan

kinda like the turkey baster method for power steering fluid..

MasterD

About a year ago, my clutch kept sticking to the floor for about 2 seconds every once in a while, then it fully stayed that way and I got stuck in downtown I got my Z towed to the dealership and they said the hydraulic fluid in the clutch depleted - easy fix and it was under warranty!

elixxur

Drove it today, no more sticking..But it feels so loose and soft now. I have to push it further in to shift. I am going to call the stealership tomorrow and have them look at it this week. Might as well take advantage of the free oil change and car wash while I'm at it.

elixxur

Update: Stealership replaced the fluid with the GTR fluid and my clutch feels like it did prior to all this craziness. Will monitor and if this happens again I'll update.

Thanks for the help Z family! ^_^

zefaulter

That sounds like a lot of other threads I've seen about CSC failing. They always try to ”fix" the problem with gtr fluid but then they'll change CSC. Then It fails again after a few months.
If mine starts showing these symptoms, I'll order HD CSC right away

Fountainhead

Yeah, they did what I recommended, they cycled the clutch fluid until it was clean. If it's under warranty they should fix it.

mab864

My '13 did the same thing at 4700 miles. Pedal to the floor while coming to a light on the expressway. I limped off the expressway and had it towed to the dealership. They changed the clutch fluid to the higher temp GTR fluid and it's better. I'm waiting for it to fail again. I need to get a HD CSC and have it waiting and see if I can talk the dealership into changing to an aftermarket part during replacement. The dealership covered the repair and the tow so I'm OK there. We'll see...

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