superbean

On the truck pcm, a second auxillary fan can be programmed to come on. I was thinking maybe use fan power one for fan obviously, but for "fan 2" have it programmed to come on at 150 or so so it stays running and can cool a trans cooler. What do you think?

Tainted

iTrader: (9)

Go for it but id have it setup so you can turn it off and on yourself. If you live where its really cold you wont need the fan during those times of year.

74modified

If you wire your relay with ignition on power, it will shut off when you stop the engine, and not run on.

gofastwclass

iTrader: (2)

Cool idea. I think it would be even better if it could be tied to the transmission temp through the PCM, but I haven't seen a setting like that in HP Tuners.

bczee

iTrader: (12)

Why not use an cooling fan sensor like the one in the kit to turn on the radiator fan. You can get then in different temp sensor to activate the relay at what ever temp you want. You can either weld in the correct size bung in the pan. Or run it inline of the trans line.

You can usually find them in different temps, like160, 180 or 190 degree temps.

BC

flame

iTrader: (13)

The B&M cooler that I use has a built in sensor that turns the fan on at 180. My trans never got over 170 so I took the fan off it. You don't want a trans to run too cold either. You can monitor the trans temp with a scanner to see if you will even need it. My trans does not go through the rad otherwise it would be hotter.