I had a similair problem with a mercedes diesel. Replaced the belt (multi-v)
and the noise was gone. I guess it was just slipping causing the squeel
noise...

SFC

"vw-stuff" schreef in bericht
...
My Golf (gti 16v, 1997) is very noisy in the engine bay around where the
rubber belt is around the alternator/powert steering/air con pump etc.
Would replacing the belt solve the problem or could it be a worn bearing
on
one of the pumps? The sound is hard to describe, it is not a squeel like
you get when the belt is loose, it is a constant whine whilst the engine
is
running.

Is replacing the belt an easy process? Do I have to remove the offside
wheel and wheel arch liner?