1. 1991 Volvo 745 Turbo
2. Each January I add a can of freon to my AC system. This year, it was running so good in January, I wanted to wait until February to add the freon. February came and went. March came and went. When I return to Houston from Banf Canada I tried the AC and it was hot. (Heat works, AC does not)
3. Try to add freon but noticed that compressor was not cycling on or engiaging to take in the freon.
4. Tried to jump start the compressor by disconnecting switch at dryer and jumping the two wires with AC turn on. This did not work.
5. Pulled MCC board to examine solder joints. Found one small crack and resolder it. Intstalled MCC board and tried to jump start the compressor via jumping the two wire at the dryer switch. This did not work.
6. Is there a way for me to jump start the compressor at the compressor. ie. Can I attach a wire from the positive side of battery directly to power wire of compressor to make the clutch engage.
7. Which wire on the compressor is the power wire. I have two on mine. One in the back of the compressor and one in the middle of the compressor. (The one in the middle of compressor is on top of the compressor.)

PS. Clutch on compressor moves freely and it not seized up. I belief it will not engage because the system is too low on freon. I thank you in advance for your advice and help.


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05 Honda Odyssey EX , 91 Volvo 745T, 91 Nissan 300ZXTT