1998 Mercedes-Benz ML320 Q&A

1998 Mercedes-Benz ML320 Question: I have a 2002 Mercedes 320 ML. I have a new compressor and everything.

The air conditioner works sometimes and then other times I start the car and nothing but hot air. Comes and goes -
Answer 1
IS YOUR FREON CHARGE AT THE RIGHT PRESSURES. SOUNDS LIKE IT MAY BE TO LOW OR POSS TO HIGH -