PWM cooling fan(s) control using ECM

[wiedemab]

Originally Posted by andrewb70

With my urging, one of my tuning customers installed a C7 Corvette fan in his 408 Windsor powered Ford F150 with the Holley Dominator ECU.

This fan works flawlessly with the Holley Dominator, which means it will work perfectly with all other Holley systems (excluding Sniper). Fan control was integrated with the AC system trinary switch, which enables different fan speed settings regardless of engine temperature.

He had his truck idling with the AC on in 95 degree AZ heat and the temperature never went above 186, with the fan hovering around 50-55% duty cycle.

Andrew

I may reach out when I get to this point in my build just to make sure I'm thinking of things correctly. First I'll read back through this thread!

I have the C&R w/ Spal setup that I plan to run in PWM with the Ford controller.... Should be fairly straight forward from a wiring perspective - - just want to validate my thinking on how to handle the signal from the AC...