Auto Air Conditioning & Heater Repair: 91 Buick roadmaster wagon AC, buick roadmaster wagon, buick roadmaster

Question
Air works then quits the deg.blinks on the climante control if I reset the system it will work fine for a few days then quit until I reset it again (disconnect the battery)system has been converted about 2yrs
Thank you for your help.

Answer
Hi Harold

If your system was retrofitted they should have put an orifice tube that can regulate itself.  When you retrofit to R-134 you can not add all the refrigerant to the system.  Your system is undercharged and the computer is going into a fail safe mode to protect your compressor.  If you can't find that orifice valve then try to add some refringent but not too much.