[urq] Chirping under the hood

[Dupree, Jim]

During the 10 years that I played dealership technician I did a lot of these
using O.E. water pumps and almost all of them would have the 'wild turkey
gobble'. As a matter of routine I started setting the timing belt tension a
little bit tighter than normal. Then after the engine was warmed up and I
had driven the car some I would loosen the to outer water pump bolts a
little bit. I then would start the engine and let it sit and idle so I could
hear the 'turkey' and using a long brass punch and hammer I would slightly
tap on the water pump to loosen the timing belt. I would do this just a
little at a time until the 'turkey' was gone. The key to success here and to
preventing disaster is making sure the water pump bolts are tight enough
that the pump takes quite a bit of force to move it so you don't loose all
your belt tension suddenly with the engine running [Not a good thing:(]. A
little practice and it only adds about 10 minutes to the water pump job.
Never had a car come back with the 'turkey' and never had a pump or belt
failure from this method, at least that I am aware of. And at that
dealership, if it came back or had a problem management let us know about
it, that about all they ever let us know.

Thanks
Jim

 -----Original Message-----
From: 	cobram at juno.com [mailto:cobram at juno.com]
Sent:	Wednesday, December 19, 2001 10:40 AM
To:	julian.stafford at virgin.net
Cc:	quattro at audifans.com; urq at audifans.com
Subject:	Re: [urq] Chirping under the hood

 "Julian Stafford" <julian.stafford at virgin.net> writes:

> Come across this on different cars many times before, that 'turkey
> gobble' sound is caused by the timing belt too tight.

I think it's got more to do with the actual water pump.  I got the
"gobble" when I changed the timing belt/WP etc. on the 200TQ two years
ago.  It was the first time I came across this, so I took everything
apart, replaced the new tensioner bearing, rechecked belt tension, noise
continued.  Played with the belt tension up and down but the noise
persisted.  Left it as was and lived with the wild turkey under the hood.


I can't be sure, but I recall the pump was of the "made in Italy"
variety.   It started leaking a few months ago (right at the 2 year
mark).   The pump I got this time (from Worldpac) was of the "made in
Germany" variety, no gobble this time around.....I'm also pretty sure
this one will last longer than the 2 years I got out of the Italian one.


It could also be the luck of the draw, depending on what manufacturing
lot your pump comes from.  I replaced the water pump in the 5KS more
years ago than I can remember (noninterference, so I just wait for the
pump to leak or the belt to snap) with the Italian variety, no leaks,
gobbles or squeaks since.

BCNU,
Cobram at Juno.Com
http://www.geocities.com/cobramsri/index.html
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