Same topic, new issue. My A/C was not performing up to what I thought it should and since I am short of time I took it to a reliable A/C man. He checked everything over and discovered it was slightly over charged and took care of that. He also noticed the compressor laboring and decided to unplug the jack to my A/C transducer which is in my PWM circuit. Immediately the fans sped up and soon the A/C was performing as it should be. This is good, but I am trying to understand why the fans would go to full or near full RPM when the transducer was unplugged. I tried this at home with the same results. I can and will change some of the parameters in the input/output PWM page of my HP ECU to get the fans to come on sooner, but would like to understand why the above happened. Any input will be appreciated. Larry
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