Looking for a little help. I have a 1985 735i. I change the ac compressor and dryer. I had it charged up. But it doeant get cold. I feel like it doesnt have enough freon. Btw 134a converted. How much freon should i put in and what should the pressures be?

Next question is about the vacuum actuators under the dash. I have a vacuum leak. When i press the INT and Auto air it says on defrost. I was wondering which actuator should i look at.