Warbling water pump??

[Ben Swann]

Right,

I have it on good authority(experienced AUDI techs.) and also my own
experience, that the turkey gobble sound is from the tensioner pully.  The
90 deg. twist can be subjective.

This is not to say that similar sounds can't eminate from the water pump or
elsewhere.

Ben

On Wednesday, July 31, 2002 10:19 AM, Bill Phelps [SMTP:wphelps at rizzo.com]
wrote:
> When I did mine, I tensioned the belt per the Book of Bentley... so it
can
> only be twisted 90 degrees I think.. and it still makes the noise... I've
> always wondered if it is some kind of cavitation in the water pump
chamber
> that causes the problem. All I know is that it is at a very specific RPM,
> just off idle. Not a big deal, just kinda bugs me..
>
> Thanks for all the input.
>
> Bill
>
>
> > -----Original Message-----
> > From:	Konstantin Bogach [SMTP:konstantin.bogach at morganstanley.com]
> > Sent:	Wednesday, July 31, 2002 10:13 AM
> > To:	bswann at worldnet.att.net
> > Cc:	'wphelps at rizzo.com'; 'quattro at audifans.com'
> > Subject:	Re: Warbling water pump??
> >
> > In all three cases I made minimal tension.  A little bit less and I am
> > afraid
> > the belt can slip.  Tensioner is relatively new - 2 years.
> > Plus, using stetoscope I hear that noise comes from pump.
> >
> > Konstantin.
> >
> > Ben Swann wrote:
> >
> > > [I changed 3 pumps trying to get read of wp sound.  First two it was
> > > whining.  Third one
> > > sounds like warbling, maybe.  It does noise  in 1200-1400 rpm range.
 At
> > > least I can hear
> > > it.  Gave up after listers responses saying they also have for years.
> > >
> > > Konstantin.]
> > >
> > > Most likely culprit is the tensioner pully making the noise (like a
> > turkey
> > > gobble) because the water pump tension is too tight.  Common problem.
> > >  Relieve the tension just a tad, or live with the noise until the
> > tensioner
> > > dies(not usual), or possibly will stop making the noise
eventually(after
> > > about 10k miles).
> > >
> > > Ben