Ford Mustang (1999-2004) Service Manual: Air Conditioning (Description and Operation)

The A/C refrigerant system is a clutch cycling orifice tube type. The system components are:

  • A/C compressor (19703)
  • A/C clutch (2884)
  • A/C condenser core (19712)
  • A/C evaporator core (19860)
  • suction accumulator (19C836)
  • connecting refrigerant lines

The refrigeration system operation is controlled by the:

  • A/C evaporator core orifice (19D990).
  • A/C cycling switch (19E561).
  • A/C compressor pressure relief valve (19D644).
  • Refrigerant containment switch (3.8L) (19D594).
  • Dual-function pressure switch (4.6L) (19D594).

The refrigerant system incorporates an A/C compressor controlled by an A/C cycling switch.

The A/C cycling switch senses A/C evaporator core pressure to control A/C compressor operation.

An A/C compressor pressure relief valve is installed in the A/C manifold and tube (19D734) to protect the refrigerant system against excessively high refrigerant pressures.

An evaporator core orifice is installed in the A/C evaporator core inlet tube to meter the liquid refrigerant into the A/C evaporator core.

A refrigerant containment switch is installed on 3.8L vehicles to cut-off A/C compressor operation in the event of abnormally high refrigerant system pressure.

A dual-function pressure switch is used on 4.6L vehicles for cooling fan control, and to cut-off A/C compressor operation in the event of abnormally high refrigerant system pressure.

Refrigeration System Components

Refrigeration System Components

 

Refrigeration System Components

Air Conditioning
General Specifications Torque Specifications ...

A/C Compressor and Clutch Assembly
NOTE: Internal A/C compressor components are not serviced separately. The FS-10 A/C compressor is serviced only as an assembly. The A/C clutch pulley, A/C clutch field coil (19D798) and the shaft ...

Other materials:

Battery and Cables
Vehicles are equipped with a 12 volt maintenance-free battery that contains a built-in hydrometer. The hydrometer eye indication is as follows: A green dot means the battery is OK. A yellow dot, red dot, or when the green dot is not visible, ...

Shift Patterns
Upshifts Transmission upshifting is controlled by the powertrain control module (PCM). The PCM receives inputs from various engine or vehicle sensors and driver demands to control shift scheduling, shift feel and torque converter clutch (TCC) opera ...

Thermostat - 4.6L(2V)
Material Item Specification Motorcraft Premium Gold Engine Coolant VC-7-A (in Oregon VC-7-B) (yellow color) WSS-M97B51- A1 Removal and Installation 1. Drain the engine coolant. For additional information, refer to Cooling System Dra ...