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Old 10-10-2012, 10:32 AM
tech69 tech69 is offline
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bench testing a radiator fan switch

Haynes says the contacts will become closed once temps reach 199. So do I boil some water or something or can I test this on the car? It doesn't appear that I can test it on the car with the switch being intermittent and god knows when it turns on.

I already bench tested the radiator fan relay, already saw the T-stat seems to be working fine, the condensor fans are the radiator fans and they turn on fine when the AC blows. So according to my Haynes book my next place to check is the fan switch on the T-stat housing.

Btw, it started to get really hot at idle, then would go down again and go back up. Fluids seem to be fine but I can't recall the fans going on other than for the AC. Any help or suggestions appreciated. It's a 2002 Honda Civic and the problem doesn't arrise everyday.
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