markrtw

22 looks like the bit of plastic from behind the headlight guiding the airflow into the box, but could be wrong. 12 looks like the bit of plastic between the lower spoiler and the wheelarch or possibly a wind deflector that lives on the back of the radiator/side of the cooling fan cowling. Hope this helps.

I have been having the same problem recently. I have replaced the matrix, rad, both water pumps, the thermostat, the fan controller unit and a number of pipes, but the cooling fan only kicks in (on fan speed 3) when it is very hot. Fan speed 1 & 2 never seem to work unless I switch the engine off when its quite hot. (Switch the ignition on again and it stops again). I was talking to Keith at ACEngineering recently about an ongoing Davia issue I have, and mentioned this to him and he said that it sounds like a broken resistor (or broken wire leading to/from). I asked what resistor as I did not know of one and he said that he could not remember the exact location on the corrado, but somewhere behind the front bumper area. I have not yet had time to investige this, but I know there is one behind the front near side headlamp, but I thought that was for the lighting. Apparently the control system when the car is off does not use this circuit as it's driven from the ECU, but when the ignition is on, the feed via the radiator thermoswitch does. Can anyone confirm/deny or expand upon this??

I have let it go to over 110 and got no fan action until I switched it off. :(

I have a 94 VR6 which over the last year has had a new rad, matrix, water pump, aux water pump and various hoses. Just when I thought all my cooling issues might be over the fan stops working! The coolant temp gauge works fine and the oil temps are as normal. When sat about in traffic and the coolant temp rises the fan does not kick in. I have not left it long enough to get hot enough to see if the 3rd (high speed) fan level kicks in. The interesting thing is when it's hot and you switch off the ignition the fan will kick in as expected. Switch the ignition back on and the fan stops again. I have tried searching on it and tried the suggestions for over-riding the fan swich, but the fan would still not work. Just to double check I fitted a new fan thermo switch from VW. I have checked the fuses related to the fan (on the fan control unit and had a look under the dash). Anyone got any ideas? Could it be the control unit itself?