Hi all, first post and wouldn't you know it, I have a problem. On my way in to work this morning, my engine fan kicked in and ran wide open. The temp outside was 70 and the engine temp guage was right where it has always been. I did have the A/C on low and coolant level is fine. I just finished a 400 mile trip this weekend in hotter weather with no issues. Why is she running like this? It even stays on idleing in the parking lot.
2008 F350 Job 1
CC DRW LB 4x2 Auto Lariat
Here is the direct quote from the owners's manual (diesel supplement).
Your vehicle is equipped with an engine driven cooling fan drive (also
called a fan clutch). This fan drive changes the fan speed to match the
vehicle’s changing cooling air flow requirements. Fan speed, fan noise
level and fuel consumption all will increase based on the driving
conditions that include trailer towing, hill climbing, heavy loads, high
speed and high ambient temperature, individually or in combination. The
fan drive is designed to provide the minimum fan speed (and resulting
fan noise and fuel consumption) required to meet the ever changing
vehicle cooling air flow requirements. You will hear the amount of fan
noise increasing and decreasing as the engine power requirements and
vehicle driving conditions change as you drive. This is to be expected as
being normal to the operation of your vehicle. High levels of fan noise
might also be heard when your engine is first started, and should
normally decrease after driving for a short time.