2008 Ford Ranger with the 3.0 Two months ago I replaced the fan clutch and the coolant temp sensor to address this issue. It did help a little, especially when the car was idling in the driveway, it would not "spool-up" so loudly. However when I am about 30% or more acceleration the fan will get really loud, like a semi-truck, with the fan spinning at a very loud and high rate.
I confirmed the coolant temps (from a ODB reader) never exceed 197f. The coolant was replaced 6 months ago. The temps here when this does this are high 70's to high 80's.
I can't understand what causes the fan to run so darn high - is it just the fan clutch?