Clutch squeal from stop

[AAA96]

I haven’t beat up the car much since having it but yesterday I decided to launch the car hard off a stop. As I was accelerating and engaging the clutch I notified a squealing sound. Any ideas?

[Steve M]

Is the clutch stock, or aftermarket?

I wouldn't expect to hear squealing out of the stock clutch friction materials, unless maybe it has been worn down to the rivets. If it was aftermarket, anything is possible depending on what's in there.

Either way, it isn't a good sign - the stock Gen 4 and 5 clutches are pretty decent, but don't tolerate much in the way of slipping. A few of us know about that first hand. The looooooooooooong first gear is not ideal for standing starts.

[SRT_BluByU]

noisy throwout bearing maybe? Or maybe a bushing in the clutch pedal that needs lube?

[Gen5snake]

noisy throwout bearing maybe?

That's what I would think.

[MoparJohn]

I am guessing it is warn down to the rivets. You might not hear it when the car is cold and the first couple of shifts, but one the friction material gets hot and the rivets expand a little they could be rubbing.

[AAA96]

I should note, the car has 6800 miles. I am guessing it is a stock clutch since the whole car was stock when I got it. The car has zero issues or sounds when I drive it normal or even hard (when clutch is fully engaged). It’s only when I rode the clutch to accelerate hard. Perhaps the throw out bearing.

[Docmartin]

Could be the pilot bearing also. Mine went out on my TT C6 and chirped/squealed when trying to leave the line with spirit. Leaving from a stop normally never caused the sound, but that thing was trashed when we dropped the tranny.

[SRT_BluByU]

there are a few spings in the clutch disc also that could have been groaning a little.. if the problem has gone away that could maybe haven been it..

[Old School]

A couple of things. I've had this same problem before, not in a Viper though, it turned out to be the pilot bearing. What's interesting is, when I replaced the clutch in my Viper, the pilot bearing was absolutely gone, mainly rust, yet made no noise what so ever.

[AAA96]

A couple of things. I've had this same problem before, not in a Viper though, it turned out to be the pilot bearing. What's interesting is, when I replaced the clutch in my Viper, the pilot bearing was absolutely gone, mainly rust, yet made no noise what so ever.

Trying to make sense of what a bad pilot bearing would do if left that way, and how can it make that sound under the circumstances I mentioned.

[Old School]

Trying to make sense of what a bad pilot bearing would do if left that way, and how can it make that sound under the circumstances I mentioned.

Mine would squeal most notably when starting from a stop. Replacing only the pilot bearing, which had destroyed itself, fixed it.

The pilot bearing in my Viper (Gen3) was really awful, just some rusty sand that used to be the needle bearings, yet it was quiet.

[AAA96]

Mine would squeal most notably when starting from a stop. Replacing only the pilot bearing, which had destroyed itself, fixed it.

The pilot bearing in my Viper (Gen3) was really awful, just some rusty sand that used to be the needle bearings, yet it was quiet.

Any negative impact to anything if left this way?

[Old School]

Any negative impact to anything if left this way?

That one squeaked for 10 to 20k miles before I replaced it. But I wouldn't recommend that, seems like it would put a load on the trans input bearing with the clutch cantilevered out there like that. But, of course, it may not be that at all......

[SRT_BluByU]

Did it only do it the one time or does it continue?

[AAA96]

Did it only do it the one time or does it continue?

Didn’t try it after i heard it the one time.

[Jack B]

That one squeaked for 10 to 20k miles before I replaced it. But I wouldn't recommend that, seems like it would put a load on the trans input bearing with the clutch cantilevered out there like that. But, of course, it may not be that at all......

In hindsight,, did it vibrate as the clutch was depressed.

[SRT_BluByU]

Didn’t try it after i heard it the one time.

I'm not sure if its something to be concerened about if it happened only the one time.. could hav just been the clutch disc springs baging around..

48677

[AAA96]

I’m going to give it another try today when I’m home later. I’ll keep you posted. I’ll see if I can record a sound with the phone as well if it does it again.

[Old School]

In hindsight,, did it vibrate as the clutch was depressed.

There was no vibration, clutch chatter or anything else, just the squeal.

[AAA96]

I’m leaning toward pilot bearing myself. But can’t seem to grasp why it would squeal only when the engine and transmission are at different speeds. Once they are mated and spinning together it has no problem. I would think if a bearing was bad on the driveline, it would make sounds even in neutral.

[AAA96]

So I took the car to get coffee this morning with a very nice launch from a stop (followed by the beautiful smell of clutch). However, no sound or squeal. Fixed itself? Or waiting to come out of the woodwork again later, haha.

[Jack B]

I’m leaning toward pilot bearing myself. But can’t seem to grasp why it would squeal only when the engine and transmission are at different speeds. Once they are mated and spinning together it has no problem. I would think if a bearing was bad on the driveline, it would make sounds even in neutral.

It does not turn any other time?? If anyone is going to remove the old pilot bearing, use a task specific puller.

[AAA96]

It does not turn any other time?? If anyone is going to remove the old pilot bearing, use a task specific puller.

So the sound from a pilot bearing is because it is jammed?

[camarochevy1970]

last time I had a pilot bearing fail, it energized the input on the transmission and made it all but impossible to get it into gear from a stop. Has it been any harder to get into 1st gear at a dead stop with your foot on the brake?

[AAA96]

last time I had a pilot bearing fail, it energized the input on the transmission and made it all but impossible to get it into gear from a stop. Has it been any harder to get into 1st gear at a dead stop with your foot on the brake?

Now that you mention that, it seems like it was a lot clunkier to get into first at stop. It goes, just not as smooth as I remember. Or maybe it’s in my head now.

[AAA96]

Just went back outside and played with it. Seems to go in and out of gear just fine with the engine off, as well as the engine on and foot on the brakes. The only time I notice any slight bit of resistance is when the car is rolling slightly and I put it in gear. Not sure if that means anything.

[camarochevy1970]

that all sounds normal

So help me out, describe when the noise happens

Engine at idle, trans in neutral, clutch released - is there noise?
Now press in clutch pedal - is there noise?
In gear and clutch depressed at idle?
IN gear and moving clutch fully released?

[AAA96]

So this is how it happened. I started the car pulled out of the garage and around the block. I was stopped and tried to accelerate hard in first gear and the sound was like a “skiiirrrrrttt” while I was riding the clutch. Went away as the pressure plate engaged the disc fully. I don’t hear any other sounds at idle, or at shift, or anything. Just the one/two times under harder acceleration while riding the clutch.

I launched it very hard from a stop today and it made no sound, just smelled of clutch burning haha.

[camarochevy1970]

that to me sounds more like noise from the friction surface then the pilot or throw out bearing

[Policy Limits]

The clutch in my GTS started squeaking after an entire day of heavy auto racing at the track. WD-40 was my friend & the issue abated.

[Docmartin]

So this is how it happened. I started the car pulled out of the garage and around the block. I was stopped and tried to accelerate hard in first gear and the sound was like a “skiiirrrrrttt” while I was riding the clutch. Went away as the pressure plate engaged the disc fully. I don’t hear any other sounds at idle, or at shift, or anything. Just the one/two times under harder acceleration while riding the clutch.

I launched it very hard from a stop today and it made no sound, just smelled of clutch burning haha.

This is exactly how mine sounded and showed itself in my TT C6. Keep tabs on it. Gonna have to drop the tranny to get to it. Big bummer for a cheap part.

[Steve M]

The clutch in my GTS started squeaking after an entire day of heavy auto racing at the track. WD-40 was my friend & the issue abated.

WD-40 sprayed on what?

Spraying the clutch pedal wouldn't be a problem, but spraying WD-40 into the bell housing is gonna result in a bad time.

[SRT_BluByU]

sounds like those springs.. you can get a weird noise if its loaded just right.I've been told it can also happen if you are starting off on a hill (facing uphill) and let the clutch out slowler than normal with a bit more gas than normal. I donno.. I hope you problem is nothing at all.