rpaitich

my '96 993 has 73K miles. The clutch slips sometimes, but then gets solid. If it's not been driven for a few weeks, it slips, simply on throttle application. Then after a hundred miles or so, it holds well. When it's holding, it makes no diff whether it's hot or cold. A friend suggested it might have something to do with the hydraulic master/slave. Any advice is welcome.

Ron

GwynnieMae

Bleed the clutch slave cylinder. If no change, clutch is on its way out. Mine did what you describe.

nine9six

So did a bleed of the clutch master cure your slippage, or was your clutch going bye-bye?

ca993twin

Well, it sounds to me like you have a seeping rear main seal. When the car sits for a while, oil is weeping onto the clutch, causing the slip. After a bit of slipping, the heat is burning off the oil, and all is OK. The solution is painful... new rear main seal, new clutch disk, and while you're in there, a new pressure plate and release bearing. I personally have doubts that your hydraulic system s holding your clutch in a partially disengaged position, but a bleed of the fluid is certainly worth a try. IMHO, of course.

GwynnieMae

Yeah clutch was bad. I only tried the bleeding method because I wanted to rule that out just in case.

Steve Weiner-Rennsport Systems

If the clutch is actually slipping, bleeding the hydraulics will only help disengagement, not grip,.....

Sounds like its either worn out or oiled up (leaking oil pressure sender or RMS). Time to take a look.

rpaitich

Thanks for all the responses. For now, all is well. We just got back form a 600 mile club trip, and no slippage after the first 100 mi or so. Even tho' bleeding may be a low probability, it's simple and cheap. If the problem returns, I'll give the bleed a shot and post an update.

Ron

nine9six

Ron,
I think you need to take a moment and read the responses again...More specifically, #4 & 6. Based upon the responses, I suspect bleeding the clutch will be a waste of time.