overheating

[Peter Berrevoets]

Had a head gasket go on my 200 (MC2) and had no oil/water mixing. Just over
pressure in the cooling system that litteraly blew apart the after run pump,
the cabin heater control valve and resulted in constant coolant loss through
the pressure cap on the reservoir.

Not a major pain if you fix the head gasket before you totally overheat the
engine and fry some pistons... =(

HTH

Peter

Peter Berrevoets
pjberr at rogers.com
1990 200TQ
1989 200TQ - Donor
http://members.rogers.com/pjberr
Toronto, Canada



-----Original Message-----
From: quattro-admin at audifans.com [mailto:quattro-admin at audifans.com]On
Behalf Of Jim Haseltine
Sent: Wednesday, April 03, 2002 4:09 AM
Cc: audifans
Subject: Re: overheating



----- Original Message -----
From: "Phil Payne" <quattro at isham-research.com>
To: "jim rose" <sf5ktq at hotmail.com>; <steve.sears at SHOESsoil-mat.on.ca>
Cc: <quattro at audifans.com>
Sent: Wednesday, April 03, 2002 9:28 AM
Subject: Re: overheating


> > and the car should just not overheatr on the highway. i lost all the
coolant
> this winter in tahoe [8000'altitude and 30 degrees american - REALLY COLD]
> and the needle never moved past about 1/3 the way up. i also dont get how
> the head gasket would cause only that problem.. seems a lot of other stuff
> would be wrong too.. is the coolant + oil mixing?  if no, then i doubt the
> gaskets bad..
>
> Anyone ever tried to find out what happens if the turbo coolant pump is
running when it
> shouldn't be?
>

Wouldn't like to experiment, but as the turbo pump flows in the opposite
direction to the belt-driven pump I'd guess that there wouldn't be much
coolant circulation (if any).

BTW, when a head gasket blows coolant & oil don't always mix - it depends
when the gasket give way. I've blown a couple of gaskets in the past and
neither mixed oil & water.

Regards,

Jim Haseltine