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:

Disassembly
1. NOTE: The index mark on the output shaft must be aligned with the index mark on the output shaft ring gear during the assembly procedure. Remove the ring gear snap ring. 2. Separate the ring gear and output shaft. 3. Remove the three output shaft seal ...

Cylinder Block Core Plug Replacement
Special Tool(s) Slide Hammer 100-001 (T50T-100-A) Material 1. Use a slide hammer or tools suitable to remove the cylinder block core plug. 2. Inspect the cylinder block plug bore for any damage that would interfere with the correct sealing ...

Removal
CAUTION: Suspension fasteners are critical parts because they affect performance of vital components and systems and their failure can result in major service expense. A new part with the same part number or an equivalent part must be installed, if installat ...