high pitch sound when cold

[quk@sievers.com (Phil Payne)]

In message <32D52E9E.954@netaccess.on.ca> Solomon Ngan writes:

> I remember there were several discussion regarding certain high pitch
> sound when the engine is cold. It may be the bearing of the water pump
> or something else, I do not recall what the conclusion was.
> It only happens when the car is really cold.

Only when cold?  Probably a belt - most likely the hydraulic/steering pump.

There _is_ a form of manifestation of the crankshaft oil seal squeal that is 
cured by driving the car - and one that is not.  You obviously haven't got the 
latter, but it's possible you have the former.  The next time the noise 
happens, leap out of the car and pull the dipstick - if the squeal stops you 
have an oil seal "problem".  Otherwise, it's a belt.  Clutch throwout happens 
on gear changes ...

--
 Phil Payne
 phil@sievers.com
 Committee Member, UK Audi [ur-]quattro Owners Club