My Dash air hasn't been very cold lately so I tried servicing it with 134a freon that I bought at Walmart with gage. The initial pressure reading was below 10 psi at 75* ambient. The gage says I sho...
as a auto shop owner that does lots of ac work you had to much Freon in rv you cant go by pressure because there are to many variables to much and not enough Freon will cause performace problems and possibly big expences my advice to you would be go to a pro. and have them put the right amount in could not cost more than 150 dollars well worth it