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

JARblue · 08-03-2016, 07:41 AM

Quote:

Originally Posted by bLKchry370z

I think I'm now victim to this issue. I was driving home saturday night and my pedal went spongy. I was able to get it home, the pedal didn't drop to the floor and there was no actual loss in pressure, but now the pedal is grabbing much higher than normal. I dropped the car off last night at the dealer to see what they say. Anyone else have a similar issue where the pedal went spongy but still had a pedal? Just doesn't make too much sense to me as to how that could be. I just hope they don't say that it's the actual clutch.

Quote:

Originally Posted by schellingr

Definitely first signs of CSC failure. The dealer will either 1) Say its normal and send you on your way (because "some" of them are a-holes) and 2) They will drain the fluid and fill it up with "GTR fluid" which technically its just a Band-Aid to the problem.

Actually that is the master failing. The CSC typically fails catastrophically. The master often fails (causing the soft pedal) and then pressure returns or the system can be bled to return pressure. When one of them fails completely, the pedal will go to the floor and pressure will not return.

However, the failing internal seals in the master can allow contaminants by the seals and into the sealed clutch system. These contaminants cause additional wear on the internal CSC parts which are are already prone to failure. When a master seal slips, fresh fluid is the best counter to the extra risk of failure due to the contaminants introduced. But as you can see from elhombre's post, even that doesn't necessarily help.

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