controlling hydro fan with aftermarket ecu?

**pandaah** · 27-03-2011, 04:05 PM

just wonder if thats a possibility?.. as i wanna use a hydrofan setup on my 1jz just dont know if it can be controlled with an aftermarket ecu as currently the motor has a jzz30 harness on it..

**George** · 29-03-2011, 02:54 AM

a hydrofan does not need any electrical signals to control it.

**CrUZida** · 29-03-2011, 11:03 AM

The hydrofan solenoid is a PWM controlled solenoid, so most aftermarket ecu's will have the hardware capable of controlling it.

Its probably more of a question if the ecu has the software capable of controlling the PWM output based on the parameters you want (coolant temp, speed, aircon pressure, etc)

**CHB** · 29-03-2011, 01:08 PM

is hydrofan we all discuss here means engine driven mechanical fan?

**CrUZida** · 29-03-2011, 01:28 PM

No, thats a viscous fan.
The hydrofan is the hydraulic one which is driven by a belt driven pump like the power steering pump.

**allencr** · 29-03-2011, 06:00 PM

Originally Posted by pandaah

just wonder if thats a possibility?..

Sure, as long as it is using the radiator's temp to control it, from its output to the engine's input, and not using the engine temp at its outlet.

**pandaah** · 29-03-2011, 10:57 PM

sweet.. well thats sorted.. beautiful =)

**Kristian_Wraae** · 10-04-2022, 06:15 AM

How is the solenoid controlled? Which voltage? Polarity? PWM duty cycles?

**Steve1979** · 14-04-2022, 03:42 PM

Depends on your ECU. I have a Ford Falcon Track car, runs a MS3X ECU. Have the ECU controlling both thermos, main fan switches in at 88 degrees, secondary at 95 degrees. It's doable

Sent from my iPhone using Tapatalk