I am new to the boards. Hello to all . I have a 1987 560sl and can't get the ac to work properly. It appears to have a new compressor that spins freely when the switch is engaged. However, I cannot get the temp below 80 farenhight. I checked the lo & hi lines and I have about 45-50 on the low side and 150-20 on the high side. any advice????? Thanks to all who respond!!! kclark34@cox.net