Let’s talk AC System
P2 Volvo (2002 V70)
We have now had some days where the temperature is 25-30 degrees Celsius and the air con is now ice cold , so I can only assume that there was moisture in the system which was freezing and by vacuuming the system for 45 minutes before re-gassing has removed this. (Unfortunately I was not able to get a scan tool to check the temperature settings but as all seems fine now I wont need to.)
I have had the system vacuum leak tested and recharged and there are no leaks in the system.
The compressor cycles on and off about every 10 seconds , when it is on there is a good12v supply to the compressor.I have read on forums about bridging the compressor clutch control relay so tried this .-I wont be doing that again!!
As soon as I bridged the relay with a fusable link the compressor kicked on and stayed on and the air in the car started going ice cold BUT after about 40 seconds of operation Gas was discharged out of the front of the car!!!! untill I switched the ignition off(I assume there is some kind of over pressure valve in the condenser?)
I am beginning to think that there is maybe a blockage in the high presssure side of the system and maybe the drier or the expansion valve is at fault?
Has anyone come accross this before?
Any ideas would be appreciated.”
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