You'll have to get a schematic and trace where the signal goes. In the older models anyway the control panel pulls a wire low to demand A/C. This ground signal passes through the pressure switch to the ECU / PCM. If the control panel is bad or the wire is shorted to ground, it will come on as soon ...

wptski wrote:Pull the clutch relay, if it doesn't engage then, you'll know that something is telling the relay to energize.

I did. When the relay is out it doesnt engage. When its on it engages. What could it be?

Just replaced my old compressor with a new one. Let me give you a back story why. I overfilled my old one and that broke it. Brought it to the dealer for an evac and recharge. That didnt work. They told me the clutch was bad. So instead of just buying a clutch, i just replaced it with a brand new on...