[V6-12v] Bizarre Cooling System Problem

[James Whitehouse]

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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