When the air conditioning system in your 1994 Ford Mustang malfunctions due to a leak in the system or a component failure, the R134a refrigerant must be recharged. The 1994 Mustang has a specific refrigerant capacity and pressure levels that must be adhered to. Failure to follow the specifications will lead to additional component failure.
The refrigerant capacity of all vehicles is measured in either pounds or ounces. The 1994 Ford Mustang's R134a refrigerant capacity is 2.13 lbs., or 34.08 oz. A recharging station uses an internal scale to precisely measure the amount of R134a introduced to the system. If you are not using a machine, you can estimate the amount of refrigerant introduced into the system by noting the number of ounces contained in each can of refrigerant you add.
The 1994 Mustang's air-conditioning system has high- and low-pressure sides. The high-pressure side's pressure should range from 125 to 230 psi, and the low pressure side should range from 25 to 45 psi. You can only check these pressures by using a set of manifold gauges connected to the service ports.
