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slave cylinder problem? constantly slipping clutch

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khartley

15+ Year Contributor
1,235
2
Jul 20, 2004
Faith, South_Dakota
I bought this 95 awd, put a tranny in it, went to start it and the clutch pedal fell to the floor. I bled the clutch and even though the pedal felt mushy, it worked. I tried to drive the car, and it feels exactly like it always has that 'slipping clutch' feeling. It goes in and out of gears like butter, but it creeps. If I mash the gas the rpms skyrocket, but the car just kinda creeps a little faster. I don't smell clutch at all (bad perm smell, right?)

I've bled the system out 4 times now. I adjusted the master cylinder rod so that the clutch pedal feels like it should, no more falling to the floor or feeling like mush.

I noticed that I can NOT push the slave cylinder rod in at all with my finger. The clutch fork stays in the middle, and with the clutch pressed it gets pushed as far over as it possibly can. But it seems like the fork never gets to be in its 'rested' position (closest to the drivers side) because the slave rod is holding it.

So what is my problem? I don't know any background on this car, I just bought it with a bad tranny and fixed that. What would happen if I shaved a bit off the slave cylinder rod? Or is that even my problem?
 
I'm having the same problem my pedal falls to the floor, I replaced the master today didn't fix it. So ill replace the slave tommrow, u replace both of those then it should be fine.

DSM!
 
I'm having the same problem my pedal falls to the floor, I replaced the master today didn't fix it. So ill replace the slave tommrow, u replace both of those then it should be fine.

DSM!


WAIT, HOLD UP!
You 2 need to do some reading.. The problem of the clutch falling to the floor is a classic. I had the same problem and there were a lot of parts thrown at fixing it. Whenever you have a clutch fork that can't be pushed over to the driver's side of the car by hand. Its usually caused by a incorrectly adjusted clutch pedal. You have it adjusted to far out and the fluid in the clutch line cant return to the resevoir. Remember, with our hydrolic clutch system the the clutch pedal has to be in the correct "zone" so to speak. When its in the correct stand by position (clutch pedal up) the fluid should be able to flow back and forth into the resevoir. When the pedal is depressed, the clutch master cylinder closes the resevoir part off and now pressure can build to move the clutch fork. If you have the master's cylinder rod adjusted "out" to far the master cylinder thinks you have your foot on the clutch so the resevoir part is clsed off (sealed) and thats why u cant push the clutch fork over by hand. You cannot drive the car like this because the clutch is slipping, depending on how far you have the master cylinder rod out.
If your slave cylinder is not leaking or anything, I can gurantee after you replace that and bleed the system 100 times you will still have the same problem.
 
Try making the rod shorter until you are able to push the clutch fork towards the driver's side by hand.

Do you now have a understanding on how the clutch system work on our cars? Once you grasp whats going on we can move forward....
 
I have adjusted the rod enough so that I can push the slave in and out, but when I do that the clutch pedal falls to the floor. If I adjust so the pedal feels nice, I can't push the slave in and out.

There is a 'little' grease on the rod from the master cylinder, but no fluid. When I pump up the system and pull the boot back on the slave, there is no fluid there either. So I don't really think either are faulty. But then again, my fluid is pretty muddy colored.

What is up with the restrictor in the 2g line? Is that something that could be causing me problems? Is it worth losing all my fluid to take it out?
 
The restrictive part you are talking about is there to control how fast the fluid returns to the reservoir. If it is removed, as soon as you release the clutch pedal after a shift the clutch reacts instantly. When I removed mine, I notice in between shift (especially in the lower rpm ranges) I got that "vroom vroom vroom vroom" as if I were tapping the gas pedal really lightly while releasing the clutch pedal type of shift. Before the mod, it was more like "vroom" and then clutch would slip a little (you don't feel any slip) and then grab.

Now with your clutch pedal, when you have the master cylinder rod in the correct position and you are able to push the clutch fork over to the driver's side by hand......stop adjusting!!! (make sure to adj the master cyl rod right to the point of If you were to give it another 1/4 turn you cant push the clutch fork over) I hope that made sense.... LOL
Now what you need to do is adjust the resting position of the clutch pedal. If you follow the clutch arm up the adjustable "stop". That "stop" needs to be adjusted. You have to make the clutch pedal sit "higher up"in the resting position. The reason is most people put a "heavier" pressure plate into the car and the stock master cylinder was not designed to really handle it. So it now takes more clutch pedal movement to get the heavier pressure plate to release. So what happens is we adjust the rod further out and it feels better but the fluid cant get back to the reservoir. Everything is revolving around the overall stroke of the master cylinder rod.
After you adjust the pedal higher using the adjustable clutch pedal "stop" you are in turn giving the added stroke required to move that heavier pressure plate and It allows the fluid to return to the reservoir!
Now If this does not work you may have to remove the tranny and either replace the shift fork ball stud or you can just shim it up by adding a washer underneath it. You can determine this by checking the wear on the shift ball and the fulcrum of the shift fork...
If this helps you out can I have a little credit as a helpful topic... LOL, COREY
 
Your information has definitely been helpful, but I think I'm leading myself in the wrong direction.

I drove a little yesterday trying to figure out the problem better, I got into 3rd gear and was going about 10mph if I had to guess... my rpms said 4k and my tach said something like 60mph. So basically my gauges are telling me the speed I should be going, my wheels just aren't getting that power. If my clutch was slipping that badly, I would smell it, and I don't. My driveline is spinning, and both axles are fully in the transmission. I don't hear any binding metal sounds.
 
What was the out come of this thread? Sounds like what my clutch is doing!
 
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