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Discussion Starter · #1 ·
I have a 1989 635csi Does anyone know where the high pressure port is on the AC system? We put 2 cans of r-12 in the low service port and the rear air is now blowing cold 38F at the vents. The front vents are all blowing warm 95F Any ideas what could cause this? does this system have 2 evaporators?
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