rad fan behavior

[Tony Lum]

At 03:20 PM 9/30/02 , you wrote:
>I have owned 2 different '85 4kqs (out of the 4 4kqs I have owned). I recall
>the radiator fan behavior being different in the two '85s than on the
>others. It has been some 5 or so years since I last had an '85 so the
>recollection isn't quite a clear any longer, but I recall it would never run
>when the engine was off (yet it does on the '86 and '87 I have owned). I'm
>pretty sure the '85 was not wired for after run operation (but can't say for
>sure). I believe the '85 radiator fan circuit is a rather simple circuit
>that relies solely on the radiator mounted fan switch and is only enabled to
>be switched on by the fan switch with ignition on. If the fan's behavior is
>erratic, I would change the fan switch. Cheap and easy, but plan on changing
>coolant and thus any other cooling system parts that are suspect at the same
>time.
>
>HTH and good luck.
>
>Mike Veglia
>Motor Sport Visions Photography
>http://www.motorsportvisions.com

Hi Mike,

You're right, the '85 model doesn't have the after run relay or
switch.  But surprise, the wiring is there.  All I had to do was plug in
the relay and add the switch, now I have the "after run" symptom.

Regards,

- Tony
lots of I-5 Audis