Iiight...up until recently, I notice that my radiator fan does not come on. I bleed the coolant system and let the car idles for about 30 minutes and yet the fans would never turn on. So I try to turn on the a/c and the fans would turn on, so my problem is not the fan. Check all the fuses and connection and all look fine. Then I jump the ect switch near the thermostat housing and turn on the car. Well the radiator fans turn on once I do that. Does that mean I have a bad ect switch?