977.1 Clutch Squeal

[terpsred]

I've just noticed a clutch squeal/moan right as the clutch pedal releases all the way out. Only happens if I'm above about 1500RPM as the clutch lets out.

I've read on past threads that it is "normal" and that it could be a glazed pressure plate/friction plate.

The car only has 18k miles and is still under CPO for another year. Is it OK to let it ride for a bit (Just annoyance) until I put the car in for the 20k service? Or should I make a special trip to address it?

It only happens in first when starting from a dead stop, and only happens right as the clutch lets all they way out (Full hydrolic pressure release). When slipping the clutch up a driveway, there is no groan, and the clutch grabs fine during normal operation, no slipping when rolling.

I have a 2006 C2. No racing, no light to light drag runs, no track days, etc.

I did notice that the squeal is only there if I'm letting the clutch out between 1000and 1300 RPMS. If it is faster than that (RPMS) and slipping more, there is no squeal. If it is a very gentle launch, there is no squeal.

AC on or off, no difference

PSM on or off, no difference

It is almost like there is some perfect harmonic point where the clutch/transmission friction causes a squeal when there is barely a difference in the rotation speeds.

I've never personally dismantled a clutch but I can envision the friction and pressure plates barely turning at different rates causing some noise, where a greater difference skids without noise.

any ideas. Since I'm under CPO should I push for a replacement?

Thanks in advance

[PAULSPEED]

Sounds like a noisy throw out bearing. When you are at a stop light, do

you keep the car in gear and keep the clutch pedal pushed?

Suggest you put the car in neutral at stop lights. This will make the

throw out bearing last longer.

Paul

[terpsred]

No, I don't leave the car in gear at lights I put it in neutral and let out the clutch. I don't think it is the bearing as it makes no sound when sitting still, or in/out of every gear. The sound only occurs when the car is warm, and when the clutch is right at the point of full pressure, and almost matched with the driveshaft speed. Anything is possible, but I would think that if it were the throwout bearing, or clutch fork that it would happen when sitting still just pushing the clutch in and out, or at least in other gears. - Any thoughts?

[Loren]

If you can reproduce the sound at the dealers shop - then I would ask for replacement under CPO.