Coolant fan stays running, help.

[Ed Kellock]

Check here:
http://www.sjmautotechnik.com/trouble_shooting/cooling.html#fan

Near the end of this section, right before the section about S4/S6
serpentine belt failure, there is a section entitled "RADIATOR FAN RESISTOR
PACK TESTS".    Near the end of this section is the following:
"OTHER NOTES: 5000TQ: The 2nd speed fan can also get stuck on due to the
relay contacts getting welded together, there was a service bulletin issued
about this problem. Whenever the ignition key is off the 2nd speed fan
should NOT be running. "

On my Avant, the A/C high pressure switch is bad and the 2nd speed fan runs
constantly but only when the ignition is on.

Ed


> -----Original Message-----
> From: quattro-bounces at audifans.com 
> [mailto:quattro-bounces at audifans.com] On Behalf Of Eric Huppert
> Sent: Friday, September 14, 2007 3:25 PM
> To: quattro at audifans.com
> Subject: Coolant fan stays running, help.
> 
> 
> Having a issue with my sons 90 200TQ where the coolant fan 
> runs continuously on 2nd speed. Ignition off, still runs...
> 
> So, I started pulling relays to see which one would turn it 
> off. Pulled all of the fan relays under the hood, after run 
> relay, radiator thermo switch, hi=pressure AC switch. Lo and 
> behold, it's still running with ALL of them disconnected? 
> Have temporarily disconnected the fusible link on the neg 
> side, but need to get this fixed....
> 
> Thoughts?
> 
> Eric
> 
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