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Not trying to hijack the thread, but I have a very similar undiagnosed issue and I was wondering if this is what happens in the OP's case. If it does, it might help diagnose his issue as well as mine. Mine is a stock 2002 Zo6, 30k miles. I have replaced the diff to fix a differential whine, so I know that is not what this is.
At speed, when I push the clutch pedal in and coast, the spinning whine sound is still present, but if I put the shifter in neutral and let off the clutch, the sound immediately stops. I can actually hear and feel the spinning stop. While still coasting, when I start to put in gear again, the noise returns even if the clutch pedal remains depressed. The lower the gear I select, the louder the noise.
Not trying to hijack the thread, but I have a very similar undiagnosed issue and I was wondering if this is what happens in the OP's case. If it does, it might help diagnose his issue as well as mine. Mine is a stock 2002 Zo6, 30k miles. I have replaced the diff to fix a differential whine, so I know that is not what this is.
At speed, when I push the clutch pedal in and coast, the spinning whine sound is still present, but if I put the shifter in neutral and let off the clutch, the sound immediately stops. I can actually hear and feel the spinning stop. While still coasting, when I start to put in gear again, the noise returns even if the clutch pedal remains depressed. The lower the gear I select, the louder the noise.
That's exactly the same circumstances that mine will make the sound. For some reason I remembered putting the clutch in while cruising would make the sound go away, but I took the car out yesterday and putting the clutch in while in motion didn't do anything and the noise was still present until I put the car into neutral in which case it immediately stopped.
Sounds like normal whine to me. If it shifts fine, engages fine, you said fluid level in trans is good, I wouldn't lose sleep over it. I know your concerned because you said the guy before you tracked the car, but these cars were built for that. I know that in my car if you downshift it and are going a little to fast for the gear, you'll hear syncro's whine because the trans is trying to match everything up speed wise for it to go into gear, I consider that fine. But like someone said above, just because you have new parts doesn't mean you rule that out. I have seen brand new parts broken right out of the box. you'll never find the noise if your taking new parts out of the equation. Good luck
Sounds like normal whine to me. If it shifts fine, engages fine, you said fluid level in trans is good, I wouldn't lose sleep over it. I know your concerned because you said the guy before you tracked the car, but these cars were built for that. I know that in my car if you downshift it and are going a little to fast for the gear, you'll hear syncro's whine because the trans is trying to match everything up speed wise for it to go into gear, I consider that fine. But like someone said above, just because you have new parts doesn't mean you rule that out. I have seen brand new parts broken right out of the box. you'll never find the noise if your taking new parts out of the equation. Good luck
Yeah the car shifts fantastically. Race Proven Motorsports said it all sounded normal as well, and while I don't question their expertise by any means, it literally just happened out of nowhere one day. I was driving along and all was good, I downshifted and instantly the sound was just there. I'm very in-tune with the noises my cars make (part of being paranoid they will inevitably fail catastrophically one me) and it was most definitely never there before, which is what has me concerned. Come summer time I'm gonna probably take a trip down to Rick and toss it up on the lift, even if it's just to get a second opinion that everything is fine and it's something that can be ignored.
No not yet. I'm taking the car in to get boosted in a month or so, going to have it looked over while it's there. I'm wondering if I'm just hearing noise from the short shifter.
You said that a shop looked at it and said it was good?.. Was that recent? Before or after noise.. I'm paranoid af and am not driving it due this issue.
It wasn't a super in depth diagnostic, but they said it didn't sound like anything out of the ordinary. We didn't get it up on a lift or anything. I can tell you I've put over 8000 miles on the car with that sound and haven't had a single issue, though every time I get on it I fully expect to hear something shatter or start clunking. I'm also paranoid about it.
Edit: Yes, I also did change the trans fluid. Something has me thinking it's a bearing of some sort.
It wasn't a super in depth diagnostic, but they said it didn't sound like anything out of the ordinary. We didn't get it up on a lift or anything. I can tell you I've put over 8000 miles on the car with that sound and haven't had a single issue, though every time I get on it I fully expect to hear something shatter or start clunking. I'm also paranoid about it.
Edit: Yes, I also did change the trans fluid. Something has me thinking it's a bearing of some sort.
My local shop said bearings. Not sure which ones. And mines been like this for 3000miles w no issues either. I don't beat on my car. But it does see some high speed highway pulls.. 804/752 on stock trans and diff lol.
My local shop said bearings. Not sure which ones. And mines been like this for 3000miles w no issues either. I don't beat on my car. But it does see some high speed highway pulls.. 804/752 on stock trans and diff lol.
Yeah I'm getting boosted in a few months. Should be right around 590-620. Won't really be seeing the track, just highway stuff, like you. Just waiting to see which blows first - clutch/driveshaft/diff or the engine.
Mine too when on the throttle, I noticed it after changing my shifter....harmonics ?
You know I was wondering the same thing, that maybe there is less sound insulation on the aftermarket shifter, and I'm just hearing something that I normally wouldn't.
I don't know. I drove mine tonight on the turnpike and it seems louder than ever. As soon as I let off the throttle it goes away, the faster I go the more pronounced it gets. I just changed my rear end fluid yesterday and it didn't help at all. I am tempted to put my stock shifter back in just to see if it makes a difference.
That's exactly the same circumstances that mine will make the sound. For some reason I remembered putting the clutch in while cruising would make the sound go away, but I took the car out yesterday and putting the clutch in while in motion didn't do anything and the noise was still present until I put the car into neutral in which case it immediately stopped.
Sounds like a torque tube bearing to me.
Mine makes a bit of a whine or rotating noise in the torque tube but it's not terrible. Yours sounds like a bearing has dried up and is on it's way out.