my air conditioning does not work, and the problem seems odd to me. I thought that maybe the system just needed charged, so i bought some r-134a and filled it up....once it filled, the ac clutch caught, spun for about 3 seconds then stopped and the pressure in the system went down to nothing. Then, the pressure went right back up to the max and the same thing just keeps repeating........i replaced the compressor and the compressor clutch but that didnt help, Any help with this problem would greatly help me, thank you

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