LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

Transmission Noise

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Old May 6, 2003 | 04:25 PM
  #1  
Chuckels's Avatar
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From: Savage, MD
Transmission Noise

I just got my car its an week ago its an M6 and when I test drove it I heard a hissing noise when i was in second gear. It didnt sound to bad at the time but when I drove it today it sounds worse. I only hear the noise in 2nd and 6th gear. The car has a hurst shifter and thats it. There is only 52,000 miles on the car. Any ideas are a start thanks for your help.
Old May 6, 2003 | 09:14 PM
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Any Ideas??? I dont want to mess my car up please help
Old May 6, 2003 | 09:49 PM
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maybe oyur trannny mount
Old May 7, 2003 | 12:04 PM
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A hissing noise, Does it change a lot with change in RPMs. If not it most likely throwout bearing related. The car probably had a new clutch in it. It hard to get a new throwout bearing in these cars that is totaly sillent. Do you have and Grinding when you shift gears? If its a just a faint chirping noise that doesnt change much over the RPM range, dont worry about.
Old May 7, 2003 | 01:24 PM
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Do you get a rattle sound when in neutral w/ the clutch out, then it goes away when the clutch is in? You might also hear this in 1st as well. I've had people tell me it was the throwout bearing, or the pilot bearing, and it was not (replaced both). Its the input shaft bearing into the transmission, one of those things you just ignore until you rebuild it

--Kevin
Old May 7, 2003 | 09:26 PM
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fbird95 and Auto Xer,
I have both of the noise that you are describing. Thanks for the piece of mind. I just wanted to make sure that i didnt mess it up.
Old May 17, 2003 | 01:54 AM
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From: Fairfield, ca
I have a problem also. I just put in a new slp clutch in my car. Now when the car is in neutral and i let the clutch out it sound like there is something rattleing around inside of my tranny. But when i press the clutch in it goes away. Do you think this could be my throwout bearing? The clutch came with a new throwout bearing and i bought a new pilot bearing when i installed it also. Do you think it could be my input shaft bearing like Auto-Xer said. If so how long would i be able to drive the car like this.
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