Thought it was a TOB...?

[4G63dsmpwr]

Well I heard a chattering noise after a HARD launch, and it sounded like a bad throw-out bearing. I'm using an ACT2100 clutch, and I think I might have launched it a bit too hard one time.

The chattering noise sounds like its coming from right above the tranny, is thats where it is loudest in the engine bay. I had a bad throw-out bearing before, and it sounds like it.

However, the noise COMPLETELY goes away after you depress the clutch pedal. This doesn't make much sense to me, since from my understanding at idle, in neutral the throw out bearing isn't spinning? Or do I just have this all wrong?

Well thanks for any help!

 

[Fattie92]

you have it all wrong.... its spinning alright, just no gears in the trans are engaged. Then when you pres in the clutch, it goes away... yup sounds like a bad TOB to me.

 

[clownface]

no no, i dont think its a bad TOB, i had a bad one and i changed it myself, it made the chattering sounds all the time, but this brand new one from the dealer that cant be bad yet makes a chattering when the clutch isnt engaged, i can only notice it when im sitting around in neutral, if i push the pedal in the sound goes away and if i let the clutch back down really really slow it wont make the sound, but if i let it out fast itll make the sounds again and itll make the sound when i start the car up unless i do the thing with the clutch and push it in and let it out really slow. I would like to know what would cause this, its one of the only things thats bothering me with my car right now, any ideas?

 

[Turbo 2g awd]

The TOB is always spinning. So when they go bad they can make a noise all the time. But they usually make the most noise when you push the clutch down. Thats when the most pressure is on the TOB cause its being forced to depress the clutch fingers on the pressure plate. If you hear the noise when you let out the clutch its either the clutch or the tranny. You are hearing the noise when you let the power cross over to the clutch / trannny. So thats where its coming from. Maybe something in the clutch plate cut loose.

 

[clownface]

hmm, i dunno, anyone else got anything i should know about this..?

 

[Fattie92]

mine was making some messed up noises like that when i bent my clutch fork.... just some food for thought.

 

[truwarrior]

Mines makes a rattleing noise when the clutch is out. When I push the clutch down it goes away an inch or so from the floor. Been like that for a year now and still going strong

I noticed however that it seems my clutch has a constant pressure all the way down to the floor, were other cars I have sat in seem to have a little pop and the pressure releases when the clutch is to the floor...

 

[abakja1]

Let me know if you find out what the problem is,..I am having the same exact problem.

I had installed an ACT 2100 and had put in 3k miles on it,..rattling noise occurred while car was idling in my garage as I was starting my car everyday to keep my battery from dying (fixing idle surge prob and TB swap). I wasnt even driving the car where it sat for 2 months.

I replaced the new 3k old TOB with another new OEM TOB, clutch fork and fulcrum thinking it was the fork rattling cause of loosness of original 14yr old part. When I reinstalled everything, same problem,..

I will have to pull clutch out and check out the springs on the clutch disc itself to see if it had come out or is loose and is the cause of the problem.

Thanks
Kevin

 

[clownface]

Ive done some researching about this a while back, from as far as i can tell the rattling in my car is from the input shaft bearings being bad, i figure if your cars are having the same problem as mine, then its the input shaft.

 

[dynatos]

i know we don't need any more confusion in the thread, but my input shaft was toast (and TOB) and i had no rattling in neutral - or at all for that matter. btw, i have a stock clutch.

 

[Module Unknown]

Yes, I've got this wonderful problem as well! No idea what it is. It's been around for a while. Recently needed a new clutch and had hoped to get rid of this problem at the same time. Well I replaced my flywheel, clutch, throw out bearing, master cylinder, slave cylinder, fulcrum ball and release fork, and got the ss braided clutch line from RRE. Newp, that didn't do it. Still have that same annoying chattering. Can only hear it at idle though. Oh well, new clutch is nice Guess i'll just live with that noise until my tranny explodes and I get a new one. It better go away then!!!

 

[truwarrior]

2 years and my car still makes the sound. I think it only happens when the car is hot. I forgot I'm so use to it.

 

[dynatos]

if only dsm's were known for pre-mature intermediate and input shaft wear

 

[clownface]

if only dsm's were known for pre-mature intermediate and input shaft wear

Sooo you dont think its the input shaft???? WTF else could it be then????

 

[FourG63 97GST]

ahh, sounds familiar.
I had a chattering 2100 be4, it want away when I pressed the clutch also, I thought it was the tob, turned out I broke 2 springs out of the clutch disk

 

[FourG63 97GST]

I drove with it chattering for months, till u start feelin a vibration in the pedal. couple days lata it gave out on me.

 

[dynatos]

Sooo you dont think its the input shaft???? WTF else could it be then????

i'm sayin' the input shaft and/or intermediate shaft is a definate possibility. DSM trannies: :thumbdown

 

[abakja1]

Im thinking that loose/broke clutch springs are the culprit too,...

So Im thinking then,..How reliable are ACT street disc clutches then as I didnt do any launches on my car, and I was still breaking in the clutch with only 3 months on it,...Again, I just installed new ACT 2100 clutch disc and plate on 3 months (3k miles) worth of driving and Im getting the "chattering noise".

When I pull my clutch this week, Im gonna put in a lighter flywheel (ACT or Fidanza), but am worrying how reliable my clutch will be if I have to get a replacement 2100 disc,..

Kevin

 

[clownface]

funny thing, tonight i lost my clutch. At first i heard POW POW POW, now it sounds like rattling change, hard as hell to get into gear and when it does get into gear when you let the clutch out it makes all sorta neato sounds till its all the way engaged, . Time for a new clutch, car is gonna have to sit for a couple weeks i guess. It was the springs for sure......... i was way wrong i guess.

 

[kpt4321]

My ACT street disc blew up too. It could be that, mine rattled before it died.

It could also be the input shaft, as mentioned.

 

[Mindslayer]

I had this same problem and had it twice. Mine was the clutch disk spring breaking. The second time was a few days ago before i took the tranny out. but I rode it out as long as i could. but its was disk.

 

[4G63dsmpwr]

Hey guys whats up - I just checked out this thread, and noticed alot more posts than I had seen previously.

I used to have a 92, with an ACT 2600, and used to have the same chattering. Later on down the road, I pulled the tranny out, and it turned out to be the springs from the clutch disk. I think I picked up an ACT street disk for like $125, and it fixed it...

I had never thought it could be the same thing. This 2100 clutch was installed at Mitsu, charged the previous owner ($600 cash) to install it and fix everything on the way in/out. The clutch is not older than 6 months...

If I've had two ACT disks go on me, am I doing something wrong? What exactly would be causing the springs to break loose (and cause the infamous chattering?).

Thanks alor for all this input, I just grabbed a new TOB from Mitsu for like $40 bucks, and I bet you my original problem wasn't even a bad TOB. Thanks again for all the information guys - great thread!

 

[clownface]

ive heard ACT clutches break springs alot, any truth to this???

 

[Module Unknown]

I hope not. Now just to add to my previous post, when I replaced my clutch, the springs on my stock disc looked fine (just went out to the shed and looked again). Right now I've got an ACT 2100 street disc with probably close to 2000-2500 miles on it. Was extra nice to it during the break in period as I also changed my timing belt the following weekend after doing my clutch. Just wanted to be nice to the car for a bit. But that annoying chattering has never gone away. Was there with the old clutch, still there with the new. I don't know what the hell is wrong with my car. :laugh:

 

[4G63dsmpwr]

Seems like alot of DSM owners are having the same problem I'm having. I wish someone with a bit more knowledge about transmissions could tell us what the noise could be. I think so far, the infamous chattering noise (from what I gather after reading this post) could be caused by the following:

Bad TOB
Bad input shaft (I don't know too much about this part myself, or even what it does?)
Springs are broken on the clutch disk
Also maybe a rattling shift fork, or bent?

I think those four are the main causes of this problem from what I've been reading here.\

Anyone else have any information, maybe a way to eliminate some of those possibilities or something? Thanks for all the help everyone!