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Fan Clutch duty cycle using AE
I'll keep this short.
I'm having heat issues. I have a BPD oil cooler.
When towing a small enclosed trailer up some 5% and 7% grades, I have seen 240/225 eot/ect. I also have a coolant pressure gauge. I've seen 18+psi.
I hooked up my AE to monitor the fan clutch duty cycle. It comes and goes. Usually from a stop, it will work for about a mile then goes back to 0% DC and the fan slows down.
If I use the AE to command it to 100% it comes on. It only shows up as 30% but it spins a little faster than the engine RPM. When I do this, it cools down quick and the pressure drops just as fast. Down to about 192/188 and 6-8psi. If i do a WOT at this point, it warms up a little, but not much. The pressure will rise to about 9psi, sometimes 11-12psi, but not very fast.
-If I can command the FC on, and it works, is it still bad?
-Should I be looking for something else? Bad PCM?
-Or, is this exactly what a bad Fan Clutch looks like?
BTW- I've got datalogs in excel format if anyone needs/wants to see them. I doubt they tell more than what I've described here already though..
Thanks in advance!
Early 04 F250 C/C SB 6.0 - 8" ProComp lift - 40" XTerrains on custom 16" black Welds- MX6R Shocks - Custom track bar
SCT Livewire w/ Bully Dog Outlook Monitor - Custom Tunes by Matt @ GearHead - 5" Straight pipe - Airaid Intake- BPD oil cooler & custom EGR delete - Blue BPD 6 phase FICM 58V - BPD billet water pump - BPD aluminum radiator - Banjos - FPR Mod - custom zoodad hole - Custom roof rack and pre-runner light bar