I guess my more direct question is what controls the fan? It is control by the ECT sensor or is it controlled by the temperature of the oil inside the clutch itself? I have an autozone ECT sensor and I have read that off brands can cause problems. I went ahead and ordered a motorcraft sensor so I can hopefully eliminate that. It spins freely by hand, it just roars when on the highway and streets. It occasionally will cut off. It has been cool here in the mornings so I figured it wont be on. Im running empty, no trailer of anything.
2002 Ford F250 7.3L
6 Speed manual
TS 6 position chip, Air Raid Intake, HPX, 4" TB Exhaust, International Upipes