Drivetrain vibration after clutch replacement

[McDoof]

Maybe not as bad as the title makes it sound.

I had my clutch replaced about 2 months ago. In general the car is much nicer to drive. I have a full range of clutch control rather than just 2cm at the top of the pedal. No more clutch shudder and so on as you would expect.

However: I drive my car at very low RPM a lot of the time because the motor is quite happy to crawl along at 1000RPM in 6th going up a hill. This has never been an issue. Since the new clutch is in it seems to vibrate when I change into a high gear at low RPM. The car sort of bounces of the clutch. It comes right if I get the revs up a bit.

Any thoughts on why this would happen after a new clutch? Too much torque on the new surface?

[Niran]

I'd say that it probably didn't do that with your old clutch in the same scenario because it was slipping. Driving up a hill at 1000rpm on 6th with a good fully engaging clutch isn't going to be a good experience for the transmission which is probably why you're getting shudder IMO. You should probably drop a couple gears up a hill

[Joker]

phwoar thats low alright, your car wont thank you for that or your fuel consumption

[McDoof]

The old clutch was still clamping fine. It just had very little travel. As for the low RPM driving. It's pretty much the same thing any newer auto and CVT will do until it gets to a certain point of course. IN most cases the I'll be doing 50 to 60km/h so it sits at 1300 to 1500RPM.

This issue manifests itself in any gear if pull from low down. AND although I don't do this often, if I drop the clutch for a launch it seems to bounce. Same if downshifting. Its fine until it gets down to around 2k RPM then rather than a nice smooth engine brake it just bounces a bit. It's like there is slack in the driveline somewhere that wasn't there before.

[Marky]

Mount at one end or the other of the thing is giving up maybe? Being undone then put back together probs killed whatever it was

[McDoof]

I'm thinking something along those lines too. The car is 11 years old and has 150k on the clock so it's entirely possible. Every other bush on the car is on it's way out.

[scratch]

I had this in my 2000 Forester, replaced the rear gearbox mount with a aftermarket (ie: better) one. sorted out the slop on lift off in gear. only downside is slightly more driveline noise in the cabin. if you want a pic of the I used I can upload it.