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air con radiator fans

fireman

New member
hi,just noticed today when i started my car in the garage only one radiator fan was running,before i start investigating, should both fans be running, ? i did a check on fuses and all good, the fan running was drivers side and its 2003 carrera, regards
 
The car has a two speed fan system. It’s likely that speed 1 isn’t working and this will be due a ballast resistor which chokes the voltage down to lower the fan speed. Fairly simple repair with Porsche parts.

Speed 2 (fast) is probably fine, as it uses a different circuit.

Kind Regards Lee Jones
 
Ref the resistors:
Mine is a MY 2002, I changed the resistors last summer, but they don't look like that, mine fatter and green, the ones in the photo the earlier 'cigar' type resistor?
The resistors cost about £200 for the pair and it turned into a big job as I had to remove the wheels, bumper, liners and both radiators/condensors to get access. None of the connectors were reusable so I needed to solder new connectors as well.
I would do it again, but I'd allow 1/2 a day to do it.
I believe that the cigar type resistors are easier access and cut in. I assumed the resistor type changed with the 2002 face-lift, but maybe it's one of the seemingly random turbo parts on the C4S?
Hope that helps!

 
thanks, im in middle of service and lucky enough to have my own workshop with lift, i have all pans and wheel arch protectors off as checking for leaks etc, so now is the time to do it. i have always been working on classics, some play golf, some have a man shed regards and thanks
 

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