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its quite possible the fan motor is on its way out and is pulling to much load on the fan resistor , alternatively the resitor is often housed near the fan housing so that the fan air blows on it while operational to cool it down when fan is on
The cooling fan is controlled by a temperature switch located on the radiator or on the engine. When the temperature of the coolant exceeds the switch temperature rating, the switch closes and energises a relay that switched a voltage to run the fan and it will continue to run until the coolant temperature drops back below the opening point of the switch. In your case, you may need to have the cooling fan replaced.
At the main fuse and relay box, check the 30A EGI INJ fuse. If OK, the main relay closes to apply power to the cooling fan relay. Next, check the 30A FAN 1 and FAN 2 fuses.If OK, power is being applied to the fan control module. The PCM processes engine coolant temperature sensor input and sends a signal to the fan control module which, in turn, causes the cooling fan motor to operate. Fan failure could be caused by malfunction of the cooling fan relay, the fan control module, the engine coolant temperature sensor, the cooling fan motor itself, or the PCM
check coolant level could be too low allowing air in the cooling system causing air pocket in engine around the engine coolant sensor.coolant sensor needs to be in hot coolant so it will cause the cooling fan to come on at a set temperature.make sure coolant correct level and the coolant level in the cooling overflow jug should be at full cold mark.the cooling overflow jug should never be empty,if you see empty cooling overflow jug air got in the cooling system so make sure when engine cold every time raise hood make sure cooling overflow jug coolant level at full cold mark.if jug stay empty you have cooling leak.so replace radiator cap,if coolant level all good,i would replace the engine coolant temperature and thermostat.when your car come to a long stop or driving along long line of slow moving traffic the engine coolant blower motor should running if not have vechicle code scan for faulty coolant fan motor control module.or ecm problems.
There is a relay located near the top or side of rad saddle or fan shroud, trace the wiring harness from the fans to this relay sounds like the relay is fused together or shorted out, or as simple as checking your temperature control setting inside, if you have a/c and have the fan set to any position other than off, and the hot/cold dial is in the blue those fans will always be running when engine is. Easy to check this, just have the car running and turn off your fan or turn your temp selector to max hot. If the fan still runs even when the engine is cold then revert to my first check on the fan relay.