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Originally Posted by LOR45
I'm beginning to think I've been testing & filling with the port on the accumulator (silver can-like part). If I'm reading other posts correctly this would be the low side port. My next question - then where's the high side port???
Obviously my career is not in the auto techician field!!
Thanks for any hints/help.
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Yes that is the low side port, you are doing it right. Don't ever try to fill on the high side port. With the compressor off, you should see high pressure. With the compressor running, the pressure will drop. You want the compressor running the whole time you are testing and filling the system. Pull the wiring connector going to the accumulator and jumper the two wires together if the compressor won't stay running. Fill the system until the pressure is about 35-40psi.