Cooling fan running noise???
Hey guys, noticed today when I left work a odd sound coming from under the hood. The outside air was around 38 degrees, and when the truck got up to around 90-100 it started making a fan noise. Did this all the way home. Wouldn't do it when I put it in neutral and just coasted. Any time under a load it did. Sounded like the cooling fan was kicked in and sh*tngettin it. Why would it have been engaged under these conditions?? Ive never heard this before. BTW 2008, F250, CC, SW, Spartanized.