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Car and Auto Forums > Nissan - Maxima > Re: Transmissio...
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Re: Transmission noise after left drive axle CV boot replacement

by David Geesaman <dgeesamanNOSPAM@[EMAIL PROTECTED] > Dec 3, 2007 at 10:37 PM

George wrote:
> Before I could get under way, I noticed a metallic rubbing sound coming 
> from the transmission while still in neutral (I have a 5-speed manual.) 
> When the clutch is *in* I don't get the sound, but when it is *out* 
> (engaged) I get it quite loudly. Don't forget, this is all while in 
> neutral! I never ****fted into first, and did not move the car.

These sounds are typical of a bad input shaft bearing.  It typically 
doesn't start happening all at once, and usually most when the tranny is 
cold.  When in neutral, clutch out, the input shaft and a couple of 
gears are the only things turning.

Could it be that you turned off the radio and just started to notice it?

Did you happen to start the car while the front end was lifted?  Did you 
drain any tranny oil and not replace it?

> Why is there a noise at all when in neutral? It's not like the axle is 
> spinning at all. And why noisy only with the clutch *out* and not while 
> pressed *in*? Neutral is neutral and clutch position shouldn't matter in

> neutral, should it?

If you put the clutch in, the input shaft disengages from the engine and 
coasts to a stop and the noise goes away.  When you drive, the load from 
the me****ng gears pushes the bearings tight and they don't tend to be as 
noisy.

I'm not sure what in your procedure would have caused input shaft 
problems, but your symptoms are solidly pointed towards bad input shaft 
bearings.

Dave
 




 7 Posts in Topic:
Transmission noise after left drive axle CV boot replacement
George <not.real@[EMAI  2007-12-02 05:36:35 
Re: Transmission noise after left drive axle CV boot replacement
David Geesaman <dgeesa  2007-12-03 22:37:02 
Re: Transmission noise after left drive axle CV boot replacement
Codifus <codifus@[EMAI  2007-12-04 07:44:42 
Re: Transmission noise after left drive axle CV boot replacement
George <not.real@[EMAI  2007-12-05 00:26:05 
Re: Transmission noise after left drive axle CV boot replacement
"cmdrdata" <  2007-12-05 13:44:32 
Re: Transmission noise after left drive axle CV boot replacement
George <not.real@[EMAI  2007-12-06 23:05:09 
Re: Transmission noise after left drive axle CV boot replacement
George <not.real@[EMAI  2007-12-20 21:02:21 

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tan12V112 Mon Dec 1 18:50:42 CST 2008.