The fan thermo switch is located on the back of the radiator just below the
lower radiator hose. three wire connection for fan speeds 2 and 3.

Still I would be more inclined to check the relays first. Relays for fan speeds
1 and 2 are located int he main relay / fuse box buy the drivers side hood
hinge. Fan speed 3 relay is located in the AUX panel under the dash by the
driver's left knee. Large and very difficult to pull due to its large conductors
to carry the amperage needed for the fast speed. I would suspect either fan
speed 1 or 2 relays to be the more likely culprit.

TonyJ
current: 98.5 A4 1.8TQM APR
precious: four T44s 84 - 91 N/A 5spd

Guy King wrote:
> The message .com>
> from contains these words:
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>>No what does this switch look like? Sorry im not very mechanical. Does
>>it look like a light switch or a toggle switch?
>
>
> It won't look like a switch at all. It'll be a fitting on the side of
> the radiator. In general it'll look something like this...
>
> http://www.bus-boys.com/121b-wasser.gif
>
> but of course, they're all different! You should be able to unplug it.
> If that doesn't stop then fan then start chasing the relay.
>