[urq] Whining noise when cold

[Ingo Rautenberg]

Jim,

I have an idea -- at first I was going to say brakes, but you seem to have
discounted that by your description.  Perhaps the center driveshaft carrier
bearing is in need of lubrication?

Ingo

----- Original Message ----- 
From: "James Howard" <spam.me1 at ntlworld.com>
To: <urq at audifans.com>
Sent: Thursday, April 07, 2005 4:32 PM
Subject: [urq] Whining noise when cold


> For the last 6 months on&off, I've noticed a whining noise from under the
> car when moving off from cold.
> The noise only occurs if the car has been parked for at least a couple of
> days. It sounds like it's coming from under the car somewhere around the
> gearbox/driveshaft/rear diff.
> The pitch of the whine increases with road speed only and is not affected
by
> engine speed, or coasting with foot on clutch or in neutral, or applying
> hand or foot brakes.
> It generally lasts for up to 1 mile and then suddenly dissapears (with an
> obvious cut-off rather than fading out) - sometimes the increases in pitch
> occur in distinct "steps" - like a bus or electric train changing gear,
but
> the steps are not related to gear change.
>
> Any ideas?
>
> Thanks,
>
> Jim.
>
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