One of these SOBs? More Information for NATIONAL A4

I have a similar issue as the Op, is this a pain in the ass to swap out? Just trying to gauge labor cost
Would rather swap a 5 dollar part then 300-400 dollar clutch

 

Hey op did you ever figure out the culprit? Was it the tob or isb? I have the same noise. A slight faint whirring noise in neutral and the second I push in the clutch the sound goes away. I have a gmpp clutch and new thow out bearing sitting in my garage so hopefully when I change my clutch in the spring the noise will be gone. But if it was the isb I might as well get that fixed when I'm changing out my clutch and tob.

 

no i never figured it out. everything is still running like normal so i am going to just leave it alone til i change the clutch

 

Classic sign of a bad TOB.

 

same issue here, although not when in neutral.

when i press on the clutch say 1 to 25% it makes a weird sound, sounds like what you are describing. almsot like a whirling or wind passing through a small passage. this is while the car is not moving. when i depress and i get back under that 25% threshold it makes the same noise and i can control it.

thoughts?

 

Did you finally change your clutch op? I think i have this problem too. just noticed it today

 

no i havent messed with it yet. as long as it doesnt get worse i will leave it alone

 

good idea. i guess if after a year you havent changed it then I wont worry about it

 

Rather than starting a new thread I found this through searching.

I have the same concern just noticed it louder this morning.

-Whirring noise at idle, goes away when clutch pushed in.
-Noticeable whirring in gears 1-2 other than that exhaust is too loud to tell ONLY when on accel, soon as I let off gas and coast there is no noise.
New GMPP clutch/tob, non LSD trans from Jeff Neiland.

So I have 2 questions:

1- Is there any way to tell a time frame here? I mean it should I just keep driving it at this point? Im not going to replace it so if I feel or can tell its really going im going to ditch the car (trade it in or put it in the trees)

2- Would stage 3 rotated Mounts and poly Upper mount play into this noise? Meaning would those increase the noise if it was only barely audible and within spec? Now to a level that's noticeable?

 

My Cobalt made that whirring noise the entire time i owned it.

 

^I LOVE hearing stuff like that. Well sort of. I just need someone to tell me everything's gunna be ok!

 

yeah I never ever had a problem with it.

During my research I found it was a bad input shaft bearing? or an input shaft bearing that was going out

However it never ever got worse.

 

Mine is still whirring, noticed it around 50k and I'm at 110k right now with no issues

 

Mine just started doing it a couple weeks ago, and I swapped for a whole new GMPP kit on my LNF back in July. However my mechanic did say the clutch was a bit loose in the transmission. Some holes around the clutch are bigger than those in the transmission, creating a little bit of play. It's probably the input shaft going bad though, as the issue started just recently. Seems most you guys still run it after a year and no worries yet, the sound is bearable. There doesn't seem to be any loss in performance as well.

 

I know this is old but does anyone know what this issue turned out to be