Datatek
Well-Known Member
guys electric fans come on when the sensor tells it to, not when the engine over heats.
On the cooling system the thermostat opens first , then when the second sensor gets warmer then the fans come on and when it cool down a little the fan go off. All with in the proper operating temp of your motor,
Wrong, the electric fans are normally called by the trinary aircon switch. On the V8 the engine ECU can also call them under certain conditions i.e. above a preset engine temperature.
Primary cooling is via the viscous fan.