My 2016 f150 5.0l radiator fan has been running on high since I replaced the water pump and thermostat. The first day was normal and then the next day it started running on high speed most. Never runs hot, stays to the left of the middle. Could air be trapped in the system or possible the coolant temp sensor is bad? Worked normal until I changed the pump & thermostat. Thanks for your time.
Radiator fan on high
- Thread starter Covah161
- Start date
Since it started right after the water pump and thermostat, I'd bet on a sensor connector that got bumped or a little trapped air before a bad sensor. A scan tool showing coolant temp will tell you if the PCM is seeing something weird. Let us know what you find.
