[s-cars] After run pump test...

[Sean Douglas]

Nick:

Remove the 2 wires that connect to the thermo switch and short them
together. The after run pump and elec fan should turn on. If it does,
then either the thermo switch is bad or perhaps the engine is not hot
enough to activate it, it takes 110C before it turns on. If it does not
then either you have a bad relay, fuse or wiring problem.

FWIW, on my 1997, my after run pump rarely came on unless it was very
hot outside. I decided to rewire the switch and use a lower temp switch
that measures underhood temp rather than coolant. Now it comes on 75% of
the time.

See my write up here;

http://forums.audiworld.com/s4s6/msgs/31961.phtml

Sean Douglas
1997 Audi S6//RS2-spec
1990 Audi 90 quattro 20v


> -----Original Message-----
> From: s-car-list-bounces at audifans.com 
> [mailto:s-car-list-bounces at audifans.com] On Behalf Of Nick Stuart
> Sent: Thursday, June 30, 2005 10:25 AM
> To: s-car-list at audifans.com
> Subject: [s-cars] After run pump test...
> 
> 
> Hello all, I know this has been mentioned before, but cant 
> seem to dig it up. Whats the test to see if either the after 
> run pump is dead, or just the thermostat/switch thing that 
> controls it? Think one of these has given up the ghost so its 
> time to find out.
> 
> Thanks!
> -Nick
> _______________________________________________
> S-CAR-List mailing list
> S-CAR-List at audifans.com 
> http://www.audifans.com/mailman/listinfo/s-> car-list
>