Ford Mustang (1999-2004) Service Manual: Air Distribution

NOTE: The air distribution system of this vehicle cannot be equipped with a cabin air filter.

There are two sources of air available to the air distribution system:

  • outside air
  • recirculated air

Recirculated air is only used during MAX A/C.

Air distribution within the vehicle is determined by the function selector switch position. Airflow control doors are used to direct airflow within the air plenum chamber. Vacuum control motors (18A318) are used to position these airflow control doors. Refer to Section for a description and operation of each of the system functions.

The air distribution system is designed to provide airflow from the defrost nozzle when no vacuum is applied to any of the vacuum control motors. This is done to prevent a situation where defrost cannot be obtained due to a system vacuum leak.

Air enters the passenger compartment from the:

  • instrument panel A/C register (19893).
  • heater outlet floor duct (18C433).
  • windshield defroster hose nozzle (18490).
  • side window demisters.

Passenger compartment air is exhausted from the vehicle through open windows or body air vents.

Instrument Panel Registers

There are A/C registers on the left and right sides of the instrument panel and in the center instrument panel finish panel.

The LH and RH A/C registers are only serviceable as assemblies.

The center A/C registers are not serviceable as assemblies. The registers are installed with the instrument panel center finish panel assembly.

Component Locations

Component Locations

 

Component Locations

    Air Distribution and Filtering
    Torque Specifications ...

    Register - LH
    Removal 1. Remove the instrument panel steering column cover bolts. 2. Unsnap and remove the instrument panel steering column cover. 3. Remove the bolts and the steering column reinforcement. 4. ...

    Other materials:

    Retractor - Rear Seat Safety Belt, Convertible
    Special Tool(s) Torx Bit, Safety Belt Bolt 501-010 (T77L-2100-A) Removal 1. Remove the rear seat cushion. 2. Remove the luggage compartment front lining board (45444). 3. Release the safety belt guide. 4. Using the special tool, remove the ...

    Engine Front Cover
    Material Item Specification Metal Surface Cleaner F4AZ-19A536-RA or equivalent WSE-M5B392- A Silicone Gasket and Sealant F7AZ-19554-EA or equivalent WSE-M4G323- A4 SAE 5W-30 Premium Synthetic Blend Motor Oil XO-5W30-QSP ...

    Removal
    1. Remove the differential assembly from the differential housing. For additional information, refer to Differential Case in this section. 2. CAUTION: Record the torque necessary to maintain rotation of the drive pinion gear through several revolutions prio ...