Welcome to 2CarPros. The description sounds like the A/C has a leak. R134A has a smaller molecule size than R-12 and will even leak through the hoses. I would start by checking with a set of gauges to see if there is any charge in the system. Then recover and vacuum the system down and see if it holds. If not then you will need to repair whatever is leaking.
Monday, June 17th, 2019 AT 1:33 AM