Any disadvantages to a stand-alone cooling system?

[Steve Cole]

Originally Posted by ls1nova71

Whether or not the PCM will shut the compressor off depends on how it's wired and what year it is determines that. Personally, I would let the PCM control the fans, why run a separate controller when the ability is already in the PCM you're running? As for the last line " has its own controller built-in, it even has the AC override function", not sure what you mean by that?

Hi Eric,
it is a 2005 year motor (Gen 3) What I meant is that the built-in controller controls when the fans come on and off and at what speed they run. You set the on/off temps on the controller and it takes it from there. It also turns the fans on at least 60% whenever the AC is turned on. It is really a slick set-up. There is a video of it in the link I posted. I like the soft start technology and the fact the fans only run as hard as they need to, usually 40-60% of their rating, making them much quieter than similar fans running at 100%. I bought the fan set-up when I first got the motor and was gathering parts for the swap. I just recently found out that GEN 3 set-ups and PWM controllers don't get along. So basically I am just trying to use what I have verses buying more stuff. I could probably bypass the controller and run the fans from the PCM but I really like the features offered by the PWM controller.

Wildkarde - Those are all good points. Unfortunately for me, it is a Gen 3 motor/PCM and that does not play nice with PWM controllers.