I just bought this truck (listed above) and the A/C is not working. Fuses and relay tested to be fine. When I jump pins 30 and 87 the compressor engages. There was 0 pressure on the low port, so I added 2 cans and got it to 20 PSI (still low, I know, but I only had 2 cans nearby). It's still not working without jumping. High and low pressure switches both light a test light but voltage on each will hit 11.3 and then drop to nothing (but still enough to light the LED test light) (using a snap on test light with built in voltmeter).
Maybe it still needs more refrigerant to trigger the switches? Or is there a bigger problem with those switches not seeing voltage?
have the same problem?
Monday, May 3rd, 2021 AT 8:59 AM