[Biturbos4] Radiator fan replacement

mike mikemk40 at yahoo.com
Mon Feb 14 12:31:21 EST 2005

Might it be a bearing gone rather than the clutch? 

If so you will have to repair it to allow the belt to
be used


 --- "D. F. Haley" <dfhaley at snet.net> wrote: 
> Matt O wrote:
> Since I changed the timing belt on my 2000 S4, the
> fan has been running non-stop, and sounds like a
> truck.  I talked to my mechanic about it, and he
> said that he thinks that the fan clutch inside the
> belt driven fan on the front of the motor might have
> gone bad.  It is always on, and you are not able to
> stop it when it runs.  It's my understanding that
> there is a fluid inside that thickens as it warms
> and causes the fan to turn with the engine at that
> time, and when it's cool, it won't spin as fast.
> Has anyone had theirs go bad?  He thought that it
> might be a good idea to remove this fan, and replace
> it with a flex-a-lite electric unit mounted to the
> back of the radiator instead (if the fan unit and
> fan clutch were about the same price).
> Anyone?  Thanks for the help!
> Matt O.
> 2000 Nogaro S4, 77k miles.
> ----
> Matt,  there's a nice write-up with pictures for
> replacing the fan which you can find by searching
> the archive at Audiworld.com.
> If I recall correctly, it requires removing a lot of
> stuff, including the front bumper.  I think the
> poster got a kit from someone
> like SPP.  The kit allows you to mount the new fan
> inside the shroud behind the radiator.  It's a bit
> tricky though because there's
> not a lot of room there, so it has to be mounted
> pretty carefully.  The good news is that the
> electric fans will draw less power, and
> you can hook them directly into the aux fan circuit,
> or switch them manually if you prefer.
> HTH!
> Frank
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