Fan Clutch

[paso0460]

The fan clutch on my 2004 6.0 never comes on even if im pulling and it starts to overheat. I dont think its the actual clutch but the electronic control. Anyone have an idea on how to find out or can i put in a new controller and see if that works if so what is the actual part called? Thank you for any suggestions

[purplehorn1977]

The fan is operated by the Engine Control Module. it sends a signal to the fan hub to engage or disengage. If you fan is never coming on even when overheating then chances are the fan hub is shot. you can have the hub tested at the dealer with software to turn the fan on or off. that is the best way to make sure.

[dannyboy950]

Ya did check to make sure the wireing is ok and voltage is getting thru the circuit.

[jsr86]

where do you live? im in phoenix where its hot and the only time my fan clutch has engauged is wen i was pulling a trailer up a big hill. it does come on for a few seconds if im stopped at a light for a while but other then that its never on for a long period of time. i also have a SCT and noticed when i was pulling that trailer that the fan clutch engauges when the coolant it 220*

[paso0460]

I will check the wiring. Thank you.
I live in central California and its only a problem when its over 95 or so. We had a few hot weeks this summer where it was 105-110 and without a trailer it was still ok but put a trailer on it and a small grade and it would get hot fast although once it started back down hill it would cool right down.

[jsr86]

you need to get some kind of tuner or a way to tell the coolant temp so you can determine if its overheating or not.