Is my clutch going?

[onewhippedpuppy]

Please say no. When downshifting and accelerating hard, it will slip for a moment unless I feather the throttle. After it slips, the pedal feels really light for a while. Eventually the normal pressure comes back. Otherwise it seems ok, when in gear if I floor it there's no slippage. What are the failure signs of the clutch on our cars? I've never bled the slave cylinder, and it still has the CDV.

[Bill R.]

restricted than normal.. i'd get rid of it and see if you still have the problem.



Please say no. When downshifting and accelerating hard, it will slip for a moment unless I feather the throttle. After it slips, the pedal feels really light for a while. Eventually the normal pressure comes back. Otherwise it seems ok, when in gear if I floor it there's no slippage. What are the failure signs of the clutch on our cars? I've never bled the slave cylinder, and it still has the CDV.

[onewhippedpuppy]

Thanks Bill, that makes me feel better. I wasn't happily anticipating spending big bucks on a new clutch. I've been meaning to flush the brake system with ATE Super Blue, sounds like a good time to eliminate the CDV.

[Gayle]

Clueless question--What is a CDV?

[tim]

Clueless question--What is a CDV?

Clutch delay valve- (big e39 540im issue)

Heres a good description of what it is in theory and why you would get rid of it
Check it: http://www.zeckhausen.com/CDV.htm

I know it's not from an e34, and I've screwed up all the other links I've given today, so go easy on me Bill.

P.S
no affiliation- just had the link.


-tim

[Kalevera]

The Clutch Delay Valve.

Designed and installed to release the slave slower and, supposedly, to prevent driveline wear. All it actually does is accelerate it. I'm told that 150k+ used to be typical for a 540 clutch, whereas some claim they only last 60k now. Everyone I know removes them, if installed.

best, whit

[Ted K]

Is the 540 the only E34 with this CDV? I am not sure my 535 has one!

[onewhippedpuppy]

The 540 6 speed is the only E34 that I have ever heard of having a CDV.