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Radiator Fans Coming On

S

stevett

New member
Hi,

Quick question concerning 996 radiator fans - should they come on and off together on both sides at the same time or are they sequential in any way depending on temperatures?

Drivers side popped on today when parking, but passenger side was definitely not. No sign of engine temperature rising higher than normal though but I admit i had not been in any significant traffic prior to stopping.

Just wondering if it time to see garage...

Thanks, Steve
 
They should both come on at the same time. Either both on low speed, or both on high speed. A bit more detail here: http://www.porscheclubgbforum.com/tm.asp?m=330170

If a fan doesn't run on low speed, it is usually a failure of the ballast resistor which controls the speed when on low.
 
Hi,

I had this on mine a while back; again with the passenger side not working. When I looked under the car the ballast resister looked very corroded. I did not have any noticeable temperature problems though and mine both still worked on high speed.

I got mine fixed under warranty. Even though only one had failed they replaced both sides.

Good luck getting them fixed...
 
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