Using a vacuum pump, you evacuate the refrigeration lines to get all of the moisture and air out of the line and verify that there are no leaks, then you add refrigerant, probably 134-A, and possibly oil charge if you determine that it is needed. You'll need to understand the concepts of refrigeration to get an idea of how much to add.
R134 a
You will have to replace the refrigerant, but not the engine coolant.
134A
The refrigerant is R134a.
R134a
r134.
possible low refrigerant
You are low on refrigerant, google R134a...
R-134.
Low refrigerant? Blown fuse? Bad compressor?
The 1995 Mitsubishi Mirage 1.5-liter MFI SOHC 4-cylinder engine uses R-134a refrigerant. The refrigerant capacity for this make and model is 28 ounces.
all vehicles from 1994 and up in the U.S. are required by federal standards to use 134A refrigerant.