[alfa] Spider rear end whine

[drm <cimice2351@xxxxxxxxx>]

Valery Danilov wrote:
 
>I wanted to tap into collective wisdom again. Never had to deal with
>differentials up to this point, but my "new" Spider has a distinct 
>whine
>coming from the rear, noticeable mostly on deceleration, or coasting in
>neutral. Under load the noise seems to go away.
>What would be the most likely diagnosis in this scenario, and likely 
>cure? In
>case I need a new rear axle, are they interchangeable between the 
>years? My
>car is a late model Spider.
 
I don't know how loud your whine is, but some is not abnormal.  Your symptoms don't sound like a bearing, but rather gear wear.  A very substantial clunk in the transition between accel and decel is more important than the whine.  I've driven cars with a rear whine for thousands of miles and it never got worse and it never got better.  The only thing I found that has made some improvement,  is the use of synthetic lubricants.
If it were mine, I'd drain it, refill with any good GL-5 gear oil, like Redline, Amsoil etc. and just drive it.  
 
Dave Miller
Deltona, Florida
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