[s-cars] Fan viscous clutch died today

[Vincent Frégeac]

Mine is running fast enough to be audible up to 4th gear. And I checked
the coupling. The fan can hardly be turned by hand when the engine is
stopped. So the coupling is definitely stuck.



Vincent
'96 //S6 with double turbo noise

-----Message d'origine-----
De : Bob Rossato [mailto:bob.rossato at att.net] 
Envoyé : 26 nov. 2003 19:06
À : Vincent Frégeac; Kevin Day; s-car-list at audifans.com
Objet : RE: [s-cars] Fan viscous clutch died today

Vincent Frégeac said:

> Hi all,
>
> The fan viscous clutch died today. Fan is running all the time. So, it
> raises a few questions:
> -        Is it a repair or replace item?
> -        What is the PITA factor?
> -        Is it easy to find besides dealers?
> -        Is it shared by other model?
> -        Is it a common failure aka is it worth buying a used one?
>
> Thanks for your usual wisdom,


And Kevin Day added:

> If the engine fan is spinning when the engine is first started up in
the
> morning, after sitting all night in <40F temperature, does this
indicate
> a probable or certain failed viscous fan coupling?

I believe the fan will run all the time.  However, if you look carefully
you
will note that it is running in the opposite direction of engine
rotation.
So, it's not really engaged as much as it is counter-reacting to the
drive
pully rotation.  It can be stopped by applying slight pressure on the
outside ring with with your fingers, or maybe something more expendable
if
you're the careless type (Don't try this at home kiddies).  At least
mine
does.  Once it heats up and locks on then it should rotate with the
engine
and pull air through the radiator.

Bob


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