[V6-12v] Bizarre Cooling System Problem

[Clive Young]

Hi Guys
Don't think it is a stuck closed stat. James you are correct in that it
would boil over very quickly. Also there is a spring in the stat acts like a
pressure release to prevent this.

 A suspect engine from a wreckers ? gotta be the head gasket. Wilfred get
any warantee?
----- Original Message ----- 
From: "James Whitehouse" <jamescarstuff at aol.com>
To: "Wilfried Link" <wilfriedlink at yahoo.com>; <v6-12v at audifans.com>
Sent: Sunday, May 29, 2005 6:59 PM
Subject: Re: [V6-12v] Bizarre Cooling System Problem


> Actually, don't suppose the thermostat is stuck closed? I know it would
> usually run over temp, but it's one other possibility for higher pressure.
> You don't mention where the other four leaks are - on the block or round
the
> rad?
>
> James
>
>
>
> On 29/5/05 4:48 pm, "Wilfried Link" <wilfriedlink at yahoo.com> wrote:
>
> > Here's a great brain teaser:
> >
> > Cooling system functions perfectly but for small leaks
> > at four different hose connections and a moderate one
> > past the O-ring at the coolant pipe where it enters
> > the block behind the thermostat. Engine is from a
> > wrecking yard with 75,000 on it. Rest of car has
> > 182,000. New upper radiator hose and said O-ring .
> > Cooling system flushed. Heater works perfectly. Hose
> > connections have been adressed by cleaning
> > connections, tightening, loosening, you name it.
> > Clamps are way tight, still leaking! O-ring replaced,
> > still leaking! Only thing I can think of is
> > overpressure, but cap was swapped and tested (15 psi),
> > no difference. Aaargh! Water pump was replaced two
> > weeks ago by 2Bennett Audimotive after it stranded me
> > in mountains by gushing coolant out of the freeze plug
> > at a horrendous rate - which sounds like blown seal,
> > right? Only old part that plays a role in this to my
> > mind is the radiator. However, even in hot weather
> > the system works perfectly -- oil and water temps both
> > happily normal. This car is to take us 3000 miles into
> > Canada and back in a few weeks, and at this rate I'll
> > spend more on Pentosin than gas!   Any clues out
> > there? I'm about to put in a new AC compressor ($595
> > A-Air Online Florida -- great manager, Keith-knows our
> > compressors very well), and just sank a ton into this
> > newer motor (2Bennett again), so I tire of high-dollar
> > fixes.
> > Thanks in advance,
> >
> > Wil
> > 1995 A6 Avant
> > Vacation Cruiser
> >
> >
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> >
>
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