[s-cars] Cooling System Presure / Accessory Belt Tensioner

[bob.rossato at att.net]

As I recall from when I last tested mine, the cap relieves at around 17 psi so
the system pressure is somewhere below that.  Unless you're overheating, the
coolant loop is going to run at whatever pressure it normally does.  This is
mainly as a result of temperature, and the delta pressure from your pump isn't
going to increase.  Sounds like you just need to tighten the hose clamp.

Bob

> --
> [ Picked text/plain from multipart/alternative ]
>
> Anyone know what pressure the cooling system should run at? I am leaking some
> coolant from the overflow hose connection on the top of the expansion tank after
> getting the engine is up to temperature. I guess the fitting is loose enough to
> let pressure and coolant escape, but I was concerned that perhaps my pressure is
> too high. I am running normal temps. What is a good way to check the overall
> health of the cooling system?
>
> On another note...the tensioner wheel for the engine accessory belt is making a
> faint chirp at idle. Should I just replace the whole t-belt / water pump, etc
> etc if I am considering replacing the accessory belt tensioner? The current
> t-belt has 40K miles on it.
>
> Thanks -AP
> 95 S6 Avant
>
>
>
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