Last year I was working on figuring out why my A/C would work for about 10 minutes and then die out. I changed the cabin air filter, to no avail. I checked the A/C relay, no difference when swapping with Horn relay.
Now that it is warmer again after winter here where I live. I am deciding to take a look at this issue again, but now the A/C is not working at all. The A/C clutch is not engaging. I didn't have my manifold set to see the pressures from Low/High, but I did use a low side gauge that comes with refrigerant. It was in the Red area really high pressure. I assume that is because the compressor/clutch is not turning on. However, my light in the car is on for the A/C no blinks just solid green. The clutch moves when I turn it so it is not seized.
What can I test before I considering replacing the A/C compressor?
Last edited by olorenzo; 06-19-2019 at 05:02 PM.
Reason: Missed some important info.
Did you check to see if power is coming into the compressor?
I did today, test the connection that the compressor connects to, coming from somewhere above. I did get voltage when A/C button was on and when turned off nothing. So I assume there is power coming in. I tested resistance on the connection to the a/c clutch coil. On the multimeter I used I got a result of 1 Hmm...
Don't forget to check the easiest thing first: the A/C relay. It's the same as the horn relay, and right near it in the underhood fuse box. Just swap them with one another, see if that fixes your problem.