i am helping a friend of mine to solve the "AUX FAN WON'T STOP" running after we shut off the engine. This unit only has 1 electrical fan set up behind the radiator.
There are 2 unique scenarios, i tried them both when engine is cold and hot.
1: After we shut off the car, fan will keep spinning till the battery die. When engine is hot like 100 degree coolant temp; it will run till the battery die.
2: When engine is cold, you manually use your hand to spin the fan, it will kick star the fan, but it will only turn at very very slow speed.
Things have been done to solve this issue: New Aux fan, new climate control panel, new coolant temp sensor, new ac pressure switch, new thermostat, new fan control module.
Please help, thanks a lot.....