2004 xlt 4.0

So mid winter the clicking under driver side dash started with adjusting the temp control.. No heat or a/c, just air blowing. I changed out the blend door actuator. Opened the old one to verify the gears actually broken, and also used the od shaped gear to move the actual blend door open and closed( as it does it easy back and forth). New blend door actuator now has heat but no a/c. I then jumped out the Low pressure cutout switch. Still no a/c. I dont know hot to check if the ac clutch is getting power. If i could i would and i checked. The relays and fuse to it. My condenser was replaced with new and system fully charged last july. Blew cold a/c until it got cold out and then the heat went when it started clicking.

Whats next?

(ahead of time. Excuse the wall of text, grammar. And thanks for helping)

 

You need to start at square one and diagnose this one part at a time. If the compressor is not running when you turn on the AC, then it is not getting 12 volts, or the magent to pull in the clutch drive is bad. If you have no voltage, it is because the low pressure switch has no gas pressure and will not close in, or there is a problem with a fuse blown. THe first thing to do is put a pressure gauge on the low side fitting and see if there is any pressure in the system. THere should be about 100 psi when not running, and you should have about 40 psi when the compressor kicks in. If you have no pressure, you have leaks. If you do have pressure, then you need to check for voltage at the clutch. If you have voltage, the clutch springs are bad or coil wire is broken. IF you dont have voltage, then the LOW switch or fuse is the problem.

 

You can check for voltage at the clutch with a volt meter, or take a small dash lite and touch to the two compressor wires and see if it lights up when the dash switch is turned ON.