Throw out bearing issue
 

What's going on everyone? Have an issue hoping someone can help me with. So pretty much the only mods I have are the century spring replacing the helper spring, and an aam exhaust. I got in the car this morning and there was literally zero clutch pressure, I pressed the clutch and it fell straight to the floor.

I would have to manually lift the clutch with my foot or hand. I know several members had issues with the CSC and had it replaced. I had the car towed to the dealer, and they said that it's the throw out bearing. Ordered the part, it will take them a few days.

I asked why that would happen and if I have a problem with the slave cylinder. They said for now it is the throw out bearing and will possibly need a new clutch, but can't tell until they take everything apart when they receive the new throw out bearing. I tried searching the forum, but could not find any info on the throw out bearing itself failing other than it making noise here and there. Also, my clutch fluid was literally empty, nothing.
Has anyone else had this problem or have any advice for me? Do you think it could possibly be the csc and not the throw out bearing, and the dealer diagnosed the problem wrong?

Other than today I have never had a problem with the car.
Any advice appreciated, thanks fellas!

yah, sounds like you have a leak somewhere either from the csc or somewhere else in the hydraulic system.


i would be very skeptical about the dealer's diagnosis without them taking the car apart.

The "throw out bearing" is the slave cylinder. And why the hell would you need a new clutch? BS if you ask me... why they would even suggest that is beyond me. The csc failure is a common issue.

well the throwout bearing is connected to the csc, but ive not heard the to bearing itself going bad.. rather only the csc..

That's my point... its one whole unit. Its just called a concentric slave cylinder, no where in the FSM is referred as a throw out bearing. These incompetent mechanics just use the wrong verbiage.

OP, did you happen to see where the fluid was leaking at? That right there will tell you if its the master cylinder or the slave cylinder. Really the only places you can have a leak.... well I mean if somehow the lines were damaged but very unlikely

When the CSC fails does it leak fluid everywhere? If fluid gets on the clutch, I would assume that would necessitate a new clutch. If a new clutch, what about pressure plate and resurfacing the flywheel. This is what we did back in 70's. (ima geezer) I assume this holds today?

Yes, if the CSC were to leak, the fluid would leak into the bellhousing and I'm assuming it is possible the fluid could get on the clutch. If that were the case, only the clutch disk would need to be replaced. I was hoping maybe the OP looked under the car when he realized his reservoir was empty. If there is fluid on the ground directly under the transmission then its definitely the csc.

That's kinda bold to say the mechanics are incompetent. They could be geezers like me and just used to using the old language. Wrong verbiage does not necessarily imply incompetence. It is, however, a valid data point for later irritation.
:ugh2:

EDIT: I was wrong, the mechanics botched the work. :shakes head:

Your second point is right on though.

Yes there was fluid underneath the transmission on the floor. The weird part is, it didn't give me any warning or notice. It's not like the clutch has been feeling weaker, especially with the different softer helper sprint it's great. The clutch literally just failed on me this morning, 0 pressure and fell to the floor. So if the dealer said it's the throw out bearing and that is what they ordered, do you think they're actually replacing the csc and just used the wrong term? Thanks for all the help and responses guys. I've never had a clutch fail on me before.

Don't get me wrong... there are some hard working honest mechanics out there. But it just seems like a lot of people get screwed over at the dealership. A clutch system on cars is a very simple design.... but a lot of people have no idea how it works.... So of course it seems they are taken advantage of. Hopefully that's not the case in this situation.... We'll wait to see there diagnosis.

Yes, if they told you they ordered a throw out bearing... they are talking about the CSC. Do they have the transmission out already?

They already replaced the CSC once? Make sure they replace the CMC, also.

No this is the first issue I have ever had with the car, especially with the clutch. And they didn't lift the transmission yet from what I was told. I brought up to them that I am aware these cars have csc problems and he said it's the throw out bearing and they ordered the part already. Should be there Wednesday or a Thursday. It's a 2012 with 27,000 miles.

Make sure they replace the CMC at the same time... otherwise it will probably be your next failure in the near future.

Well, sound like you are taken care of then. I'm assuming they are aware of this common issue if they already diagnosed the problem without even removing the transmission. Is warranty covering this or you have to foot the bill?

Too bad you didn't have a chance to order the Zspeed heavy duty slave cylinder. There is a high probability that the csc they will be replacing will fail on you again in the near future. The joys of owning a Nissan :tup: