[V8] Timing belt "rattle" once again

[dsaad at icehouse.net]

For me, the noise was some combination of fan clutch bearing, fan bearing and 
oil pump drive bearing. (all were eventually replaced)
That last one sucks the most because it means tearing down the whole front of 
the motor again.

Have you tried running the motor with the fan belt off to eliminate any of 
those rollers?

Dave

Quoting quattro + 5 or 8 = fun <thequattroking at yahoo.com>:

> My guess is the tension adjuster screw-mo-thingy.  Happened to me. 
> Don't
> remember which side it was.  Did not take to long to fix.  But, since
> you
> had it done, bet you could talk them into warranting it.
> 
> 
> Shayne
> 
> 
> Bay Area, CA
> Eastern WA State
> 
> 
> PARTING:  1972 Mercedes Benz 280 SE 4.5
> PARTING:  1986 Audi 4000 CS quattro
> 
> > From: "Kristian Manusha" <v8q at hotmail.com>
> > Date: Tue, 17 Feb 2004 12:09:40 -0800
> > To: v8 at audifans.com
> > Subject: [V8] Timing belt "rattle" once again
> > 
> > Hello V8 list,
> > 
> > My apologies, this subject has been address numerous times in the
> past.  I
> > have just completed the timing belt service to eliminate the
> rattle/knocking
> > noise eminating from the driver's side valve cover.  The timing belt
> was
> > changed approximatley 2 years ago by a VAG techincian and from that
> day
> > forth the noise began to appear when the engine became warm.  Now, 3
> months
> > ago I replaced the the timing belt again with a factory one in hopes
> of
> > eliminating the rattle.  When inspecting the previous t/b job I found
> the
> > tensioning shock was out of spec and for the hell of it threw in all
> the new
> > rollers and factory water pump.  Upon completion of my service the
> noise
> > went away for a little while, but has come back slightly quieter.
> Factory
> > tools were used as well. Just wondering in there was any consensus on
> what
> > could be making the ugly noise, I recall there were a few posts with
> > different components causing the annoying rattle.  Any help would be
> greatly
> > appreciated.
> > 
> > 90 V8 76,000 km
> > 
> > Kristian.
> > 
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