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rcox09satx
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2001 911 C2, body 996 After reading several threads about this subject and testing my car I found that.. The original problem was the 40A fuse, C8, for the passenger side fan was blown. After replacing the fuse both fans started to work when the A/C compressor was switched on or after reaching a temperature of 206?? (little over half way on water temp meter). But it appeared that only one speed of fan operation was working. After further testing I found that by jumpering each of the 4 relays on at a time I could cause each fan to come on, low speed and high speed, one at a time, all worked. So there was no problem with the ballast resistors. What I did find was that when the water temp was low, and the A/C was switched on, the fans came on in low speed, not high speed (as is stated several places in threads) and that my temperature never got high enough for high speed fans to come on. Only the low speed fan is used, unless the water temp gets very high??. Ambient temp was about 76deg F