Audi 200 Heater Control Valve

[Tony Hoffman]

The cooling system also requires pressure to opperate properly.

Tony Hoffman

On 3/31/07, Vittorio Bares <Vittorio.Bares at nuance.com> wrote:
> Hi - so the 200 overheated today...
>
>
>
> I was able to get it home and found the "in" side of the heater control
> valve had broken - clearly coolant went everywhere...
>
>
>
> There seemed to be plenty of coolant still in the reservoir the first
> time I stopped the car to let it cool down. Less so when I got it home
> (no worries it was a short trip).
>
>
>
> What I can't figure out is why it would overheat if there was still
> coolant in the system. By looking at the valve, it being broken would
> simulate it being wide open. There would be no (or very little) fluid
> returning through the system - but then again - in the summer when the
> heat is off - this would be the case as well.
>
>
>
> Perhaps one of you could enlighten me - perhaps there is a secondary
> problem?
>
>
>
> Fan was working properly - no other leaks were evident.
>
>
>
> TIA !
>
>
>
> Vittorio -
>
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