Re: 156 air con diagnosis
It almost certainly needs a re-gas. You are supposed to use the aircon on a regular basis, even in winter, to keep it working. I've never really understood why and maybe someone on here can explain. But I've heard that it must be used for a minimum of 1 hour a month - something to do with joint seals? In my experience it's best to leave it on all the time and whatever you do, the system will probably need a re-gas every couple of years. The good news is that a re-gas is quick and fairly cheap. The bad news is that Alfa 156 aircon is pretty poor. It will be obvious when it is working though - there is a definite drop in air vent temperature. For best results, turn on aircon, turn to min temperature, press the air recycle button and turn up the fan speed a bit. Don't leave the air recycle button on for too long if there are a lot of people in the car though.