After Run Cooling System Fixed

[Azman]

Relay is up the spout???

[jevrem]

I have problem with my after run system. when i conect two wires at the afterrun sensor the pump is working but the electric fan isn't. I check the fan and is OK. Does anuone know why the fan won't start when I start afterrun system.
Than'x

[Jamo]

Hi there

Not sure what the Audi PN is by I sourced my replacement directly from a Bosch (washing machine!!) agent. The Bosch pump was about 40% cheaper than the OEM. The Bosch PN for the pump is: 0-392-020-054 and it is identical to the Audi verison even down to the electrical plug.

Regards
Andre

For those that haven't seen it before. Must make a sticky

[Jamo]

My local Bosch dealer wants £92.76 for the aux. pump....perhaps I shouldn't have mentioned it was for an Audi quattro!

Can confirm its £65 from GSF

[PeteRR]

My local Bosch dealer wants £92.76 for the aux. pump....perhaps I shouldn't have mentioned it was for an Audi quattro!

[mreinders]

@ andre : Thanks very much for the information

[iain1067]

i do mean the sensor for after run, which is what i have just replaced

[Billman]

and yes i have changed rad fan sensors with the rad in the car, it's tight but can be done, better to do it from underneath and the new ready to go straight in otherwise you end up loosing all the coolant, mind you good time to change the coolant if required.


Iain

You mean also the After run cooling Pump Sensor?

[andre]

Hi there

Not sure what the Audi PN is by I sourced my replacement directly from a Bosch (washing machine!!) agent. The Bosch pump was about 40% cheaper than the OEM. The Bosch PN for the pump is: 0-392-020-054 and it is identical to the Audi verison even down to the electrical plug.

Regards
Andre

[iain1067]

and yes i have changed rad fan sensors with the rad in the car, it's tight but can be done, better to do it from underneath and the new ready to go straight in otherwise you end up loosing all the coolant, mind you good time to change the coolant if required.


Iain

[iain1067]

The rad fan switch i haven't tested, on the S6 i have both electric fan (which is used for additional cooling when the a/c is on and also after run) the main fan is a viscous coupled one. Usually the best way to test this is to let the car sit idling when hot and it should come on and off as the coolant temp rises.

good point about removing the relay to stop the after run pump and fan draining the battery, had that before on my old urs4, took me a while to fathom out why i was getting a flat battery. Apparently the after run relay goes **** up inside after a few years, i replaced the original brown coloured one with a black one problem solved.

Iain

[Billman]

A Witch sensor? Do you get many ghosts and ghouls in your home town Billman

On a serious note i've found the procedure on S2central and it says remove the relay to disable the rad fan which is very sensible.

http://s2central.net/cooling01.html

http://s2central.net/cooling04.html

I want a procedure on how to remove the Sensor from this **** location!

[mreinders]

Can anyone tell me the part number for the after-run pump?
I am trying to source one from GSF and I think this is the right one : 17072 WATER PUMP-ADDITIONAL ACOUPQ 5 Cyl 2.2 S2 20V 9/90 > 65.00
Thanks in advance

[Jamo]

I wish i'd known about this before the weekend when i changed the coolant hoses

[Fat Audi 80]

Excellent...