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My clutch pedal became useless for a little while...

So I'm leaving work tonight around 630 pm and notice my clutch pedal has a bunch of play all the way down to the floor except for say about 2".

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Old 05-19-2012, 01:32 AM   #1 (permalink)
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Default My clutch pedal became useless for a little while...

So I'm leaving work tonight around 630 pm and notice my clutch pedal has a bunch of play all the way down to the floor except for say about 2". Basically no feathering of the clutch at all. I pulled over and turned the car off and back on and still there.

I keep driving to my destination and notice engagement is difficult because it's happening at the very end of the pedal's normal distance (near the floor). I finally reach my destination and as I get off the freeway I notice the clutch is back to normal and that play that existed before is gone. Now I could feel something is happening as soon as I press the clutch and it doesn't flop around.

What are some possible causes for this? I was told there might be air in the fluid some reservoir but I have no idea how that works. I can't seem to reproduce it to show the dealership...anyone ever have this happen to them? My car is stock. No spring mod or anything.

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Old 05-19-2012, 02:32 AM   #2 (permalink)
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perhaps a bad clutch line? sounds pretty rare; first I've heard of this on a non-track vehicle.
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Old 05-19-2012, 04:57 AM   #3 (permalink)
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The clutch master cylinder is prone to going out on our cars. sounds like something to get checked by the dealer before your warrenty goes out.
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Old 05-19-2012, 07:27 AM   #4 (permalink)
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The clutch master cylinder is prone to going out on our cars. sounds like something to get checked by the dealer before your warrenty goes out.
Are you sure? The CSC is prone to fail, but I haven't heard of the master failing.


OP, did you check the fluid level? If you're low, it's going to feel pretty soft.
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Old 05-19-2012, 11:22 AM   #5 (permalink)
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Are you sure? The CSC is prone to fail, but I haven't heard of the master failing.


OP, did you check the fluid level? If you're low, it's going to feel pretty soft.
I've checked the fluid level and it seems to be full. This happened once and it was intermittent. Any other advice? How should I approach them with this issue?
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Old 05-19-2012, 11:46 AM   #6 (permalink)
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look up CSC failure man. im 99% sure thats your problem. best of luck on it.
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Old 05-19-2012, 02:31 PM   #7 (permalink)
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Just wondering, OP, what is your mileage?
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Old 05-19-2012, 03:44 PM   #8 (permalink)
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look up CSC failure man. im 99% sure thats your problem. best of luck on it.
Thanks man. I found the CSC threads shortly after making this thread. So if it's intermittent, it is the CSC issue? I did ride it hard during lunch and then it sat there for about 5 hours.


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Just wondering, OP, what is your mileage?
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Old 05-19-2012, 03:48 PM   #9 (permalink)
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Both of them are prone to fail. I had the CSC replaced first, then the master.
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Old 05-19-2012, 04:09 PM   #10 (permalink)
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Considering my Z only has 12000 miles and has been around for the better part of three years, I guess my mods list is right having a new clutch and flywheel.
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Old 05-19-2012, 06:21 PM   #11 (permalink)
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Considering my Z only has 12000 miles and has been around for the better part of three years, I guess my mods list is right having a new clutch and flywheel.
What does that have to do with the pedal, CSC, and master cylinder?
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Old 05-19-2012, 06:58 PM   #12 (permalink)
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I've checked the fluid level and it seems to be full. This happened once and it was intermittent. Any other advice? How should I approach them with this issue?
When I went with a supercharger I replaced the CSC/clutch and flywheel but when they began to dyno the it would not go into 5th. the installer was able to take it to nissan and have them replace it under warranty and was told by nissan that they have seen some master cylinders go, it just became more prevelant with the additional power. So if it is not the CSC I would almost bet it is the master but good point check the CSC first.
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Old 05-22-2012, 04:21 PM   #13 (permalink)
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So guess what guys? I went to the dealership today to talk in person about what repairs will be done on my car and I got some really good news. They are replacing the CSC, Master cylinder, flex line (?), and ECM because the previous one is loud. I think I did well.
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Old 05-22-2012, 07:22 PM   #14 (permalink)
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So guess what guys? I went to the dealership today to talk in person about what repairs will be done on my car and I got some really good news. They are replacing the CSC, Master cylinder, flex line (?), and ECM because the previous one is loud. I think I did well.
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Old 05-23-2012, 08:54 AM   #15 (permalink)
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So guess what guys? I went to the dealership today to talk in person about what repairs will be done on my car and I got some really good news. They are replacing the CSC, Master cylinder, flex line (?), and ECM because the previous one is loud. I think I did well.
great!!!
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