Originally posted by Jamo
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The fault was related with the ECU (it looks like a relays but it's definetely not a relay)
In the relays compartment under the steering wheel.
Position 9
part No 447 965 571 A
Firstly this ECU/relay was making my after run pump running continuosly with ignition off.
I got a couple of this ECU/relay from a friend and i went to change it...
Problem: fan running continuosly with ignition off at first speed.
Changed the ECU/relay with the second one i got from the guy and everything started to work properly.
Jamo be careful of another issue: the circuit it's timed so you have to check that your process (pump plus fan) stays on for 10 minutes.
It might be that when you plug in the new thermoswitch you give power once to the circuit in that case you'll have a first ten minute running cooling process check if the pump it's running as well.....
If you have just the fan running alone without the pump i can tell you for sure that the problem it's related to a faulty after run ECU/Relay.
Stefano
P.S.
Did'nt have the goodwill to change the thermoswitch from the LT right now.....
I will do it when for same reason i have to move something in that area...
For now i just fixed a 10amp fuse between the two wires and to be honest with the climate we started this spring in Italy (33° celsius now).... i love to have those ten minutes cooling down process every time i switch off my car, considering also that normally I don't do stop n go journeys i'm thinking seriously to leave it with that fuse on.
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