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:

Jacking
WARNING: Never run the engine with one wheel off the ground, such as when changing a tire. The wheel still on the ground could cause the vehicle to move. CAUTION: The jack (17080) provided with the vehicle is intended to be used in an emergency for changing ...

Vibrate Software
Vibrate Software (Rotunda tool number 215-00003) is a diagnostic aid which will assist in pinpointing the source of unacceptable vibrations. The engine's crankshaft is the point of reference for vibration diagnosis. Every rotating component will have an angu ...

Air Conditioning (A/C) Pressure Relief Valve - 4.6L
Material Item Specification PAG Refrigerant Compressor Oil (R-134a Systems) F7AZ-19589-DA (Motorcraft YN- 12-C) WSH-M1C231- B Removal and Installation NOTE: Installation of a new suction accumulator is not required when repairing the ...