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With the actuator test you verified that the relay, clutch coil, fuse, PCM and wiring are all good.
The problem could be a handful of things.
It could be the control head not sending a signal to the PCM to turn the compressor on, but that wouldn't be very likely.
It could be low charge. The actuator test will run regardless of whether the system is charged or not. The most common cause of an a/c compressor not engaging is low charge.
It could be the a/c pressure sensor. The pressure sensor monitors actual pressure in the high side of the system and the compressor will be disabled if pressure is too high or low. To check the pressure sensor you can compare it's reading on the scan tool against what you see on the high side manifold gauge. If it's not showing the correct pressure then it could be wiring but is most likely the sensor.
There is also a temperature sensor on the evaporator that could be bad and preventing the compressor from engaging but failures of this sensor aren't that common either.
My scan tool doesn't show anything for the a/c except the a/c request, and when i request it, turn it on, the scanner says its turning it on and shows its off and when i turn it off, it shows its on and i can hear the clutch pull in? So should i just go down your list of could be's?
it was empty on freon, so i put two cans(24oz) its blowing cold, it must have a slow leak as the first worked for 2 weeks when i got the van. What should the pressure be? i have a manifold gauge now.
91f outside , the gauges showed blue 115psi or 35 on the r134a scale and the red 34psi or 34 on 134a scale
after 10 min running the low is 32psi and the high is 195 so its close, how much freon does the system holed?
i put 2 12oz in so another half can should do it right. thanks and are the pressure ratings for any a/c system?
yes it has rear a/c so i'll add the half can, it leaked down is why it quit working so next time i'll add a can with dye to find the leak, should i add oil or does that stay in the system with a slow leak? thanks for you help.
what type of oil? pag100?
thanks, i'm trying to recharge the system again after fixing the leak(hole in line to rear a/c) last time the compressor kicked in while putting the first can of freon in, this time I have put 1 can in and have the second can hooked up but the compressor hasn't pulled in yet, is there a pressure switch i can jump to get the compressor to pull in?
my bad, the compressor is working, i just couldnt tell so i had my wife turn it off and on to make sure. thanks again