Ok, so on my 07 the fan and shroud were damaged so this is why I'm asking.
I need to see if RPMExtreme is controlling the AC on the GM side, and then able to program the GM ECU for the JL fan then since I have their kit. Being sealed or not is not a worry as I don't ford rivers when offroading.
If I just wanted to make it complete stand alone, what controller do you recomend? I researched doing a Pentastar fan this way, but all the controllers I found had bad reviews and early/multi failures. Admittedly I didn't do an extensive search cause then this thread popped up.
We are controlling the AC with the factory Jeep HVAC system. It monitors the EVAP temp and controls the compressor the same way it did factory. We also have the AC pressure signal on both the GM and Jeep side as well as the GM AC request signal. So if you wanted to run a fan from the GM side it would work and have AC pressure feedback. I don't really recommend this in most applications.
For the last few years we have been running a PWM wire in our harness that will control a PWM fan. All of our 07-11 EZcan modules are programed to run the Pentastar fan directly from the EZcan module and doesn't rely on the TIPM for fan control. The 2012-2018 kits will still use the TIPM for fan control but we send the signal to the TIPM to command fan speed, no wiring is needed to be changed as the fan is all ready wired to the TIPM from the factory.... we also include the PWM wire in our harness to run the fan just in case something happens to the TIPM.
We have fond that the early JK's mostly 2007 cannot have the PWM option turned on in the TIPM. Even if you turn the option on it will not output for a PWM fan. This is the main reason we we are controlling all the 07-11 PWM fans directly from our module.
If you have a early EZCAN module we can update it for you to allow PWM fan control. email me directly if you are interested.
The JL fan has a much larger shroud, is much louder and I don't feel that it cools as well as a JK Pentastar fan. We have full control over this fan as well but I would not use it in a JK.
We also have a standalone PWM fan controller. EZPWM
A lot of the guys with HEMI swaps have been using it with very good results. The PWM controller will tie into the CAN wires and will monitor engine coolant temps and AC pressure. It will control the PWM directly and use the inputs to vary the speed. You can also add extra inputs for a override switch or something else.