the TD3 may have it, and the Diablo i3 and T2 offer a parameter for target coolant temp. Theres no traditional on/off control with the JL, the pcm simply targets a coolant temp and works the fan to get it to stay there.I did some googling. couldnt find my answer. Wondering if there are any tuners that allow for fan control?
I wonder the same... I've had the engine/oil up to 110C, and the fan doesn't cut in, but then other times, both are around 90C and the fan cuts in full speed...Are you trying to get the fan to run more, or less?
There’s some strange stuff in the programming for the JL cooling. Sometimes the fan on mine will go 100% speed for several minutes, when there’s no reason visible on the gauges. As in ambient temp below 60, with oil, coolant, and transmission temp <200. This is most often noted on low speed trails. Maybe it’s cooling the power steering or something???