Engine fan

[muhlum]

The bunk fan could be it then, I swear that damn thing turns itself on. I don't think it's a bad sensor as I've gone through them a while back from rawze's YouTube vids, but I could check again. And no I don't have insite as I'm relativel new to these trucks, maybe I'll look into it this weekend and let you know what I find on Monday. As for oil temp it generally hangs around 220-225 going down the road.

[Chamberpains]

You should definitely look into Insite 7.6.2 this weekend. It would tell you real fast what was going on.... there is endless info on here about where to get it and anything else. Stop guess at things and be in control of your business.