Your A/C may need freon....More likely R134a is the gas that will be working with your system.You will need a manifold gauge to check it ... A car will need 'topping up' once every 6 to 9 months if its used often .If its not used often possibly once every 3 to 5 months. The blue gauge should read from 35 to 40 PSI while the red gauge (high pressure) should be 200 to 225 PSI.
Answers & Comments
Your A/C may need freon....More likely R134a is the gas that will be working with your system.You will need a manifold gauge to check it ... A car will need 'topping up' once every 6 to 9 months if its used often .If its not used often possibly once every 3 to 5 months. The blue gauge should read from 35 to 40 PSI while the red gauge (high pressure) should be 200 to 225 PSI.