Gus, There is a section of freon line that rubs against the fiberglass under body that will eventually cut a hole into the line. If this has happened it would explain a sudden loss of freon. You will need to either bypass the low pressure cut off switch or pressure test the freon line to determine if a refrigerant loss is the cause of your problem. DMC Joe / DeLorean Services / <dmcjoe@xxxx> Web Site: <http://www.deloreanservices.com>