On our 2006 Itasca Horizon w/Cummins 400 We had some temp issues out west in June. Warning temps when climbing and I had to downshift to cool things off. Got home cleaned the RAD and all looks good. I...
That's pretty much what I was thinking. Low fan all the time except for high temps OR AC on.
I was reading on another forum a post from an owner who said "Freightliner said cold engine fan off to normal temp then low to high" mine has never done that.