If your Mitsubishi Mirage is having air-conditioning issues, you may be able to recharge it without having to take it to a mechanic’s shop. The caveat for recharging the air-conditioning system yourself is that the vehicle needs to have some cold air coming out of the vents, which means that there is still some refrigerant left in the system.
It should be noted that recharging the refrigerant involves the use of chemicals that are dangerous to your body and the environment, which is why the Environmental Protection Agency closely regulates the use of certain refrigerants.
Raise the hood on the Mirage and prop it open. Find the high and low service fitting valves for the air-conditioning system, which should be located near the upper left part of the engine. Since the mid-1990’s, the fitting valves for R134A refrigerant use two different sized valves for recharging, sized at 13 and 16 millimeters.