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Hello!
I have been chasing an a/c issue for a while now. the car would blow ice cold a/c and just randomly stop. After it did that for about a few months it finally did quit and never came back. took it to Firestone and all they did was put dye in it and told me to bring back to check for leaks. After chatting with a few other CRV owners they said they had the same problem and i was the expansion valve. I replaced valve and the pressure was reading fine at 40 PSI. Now the compressor The pressure is currently reading 150PSI on the low side because the compressor is not engaging. I did some diagnosing today and found that the compressor is not locked up and spins manually OK. I am however not getting any voltage to the compressor plug. I traced back to the relay which is getting 14 volts, I checked all fuses and they are good as well No leaks in the system. So my thoughts are the system is over charged and being shut off by the pressure switch it also may possible air in the system. What would be my next diagnoses step? or would it just need a proper refill.
I didn’t understand how it could be blowing ice cold one day at 40psi then completely stop and read 150+ PSI.
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I would suggest to recover the AC system and get it recharged according to the weight recommended by the car manufacturer. You need to go to a professional for that. Once that is confirmed and if it still doesn’t work then you need to check other things like the cooling fans, compressor relay (if it is functioning properly or not), if the relay is getting signal or not, pressure switches, etc.
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