Once in a while my A/C does not come on when I start the car. (three times so far) Twice it eventually came on, but once I had to shut the car off and restart, then it came on immediately. Turning the system off at the dash and then back on does not make it kick in. I think the system is a little low on refrigerant because the sight glass is milky. (But it does blow cold if it is not too hot outside.) I am having the refrigerant checked/filled up today. The question is, can low refrigerant cause the whole system to refuse to come on? Blower fan too? Seems like the fan should run regardless. But maybe there is a sensor that prevents the system from coming on under certain conditions? Like high outside temperature? It was about 92 yesterday here in Phoenix. '89 560SL
- posted
17 years ago