Ford Mustang (1999-2004) Service Manual: Heater Core

Removal

NOTE: If a heater core leak is suspected, the heater core must be pressure leak tested before it is removed from the vehicle. For additional information, refer to Section.

1. Remove the evaporator core housing. For additional information, refer to Evaporator Core Housing in this section.

2. Remove the foam weather seal.

Heater Core

3. Remove the screws and remove the heater core cover.

Heater Core

4. Remove the heater core.

Installation

1. NOTE: Be sure to install a new oval foam weather seal around the heater core inlet and outlet tubes.

To install, reverse the removal procedure.

    Evaporator Core Housing
    Material Item Specification PAG Compressor Oil (R-134a Systems) F7AZ-19589-DA (Motorcraft YN-12-C) WSH-M1C231- B MERPOL NA ESE-M99B144- B Removal NOTE: The evapor ...

    Evaporator Core Housing
    Disassembly 1. Remove the evaporator core housing. For additional information, refer to Evaporator Core Housing in this section. 2. Remove the foam weather seal. 3. Remove the screws and remove th ...

    Other materials:

    Transmission Support Crossmember
    Removal and Installation 1. Raise and support the vehicle. For additional information, refer to Section. 2. Support the transmission with a suitable transmission jack. 3. Remove the crossmember. 1. Disconnect the HO2S sensors and position them aside. 2. ...

    Hydraulic Lash Adjusters
    Removal 1. Remove the roller followers. For additional information, refer to Roller Followers in this section. 2. Remove the 16 hydraulic lash adjusters. 3. Inspect the roller followers. For additional information, refer to Section. Installation 1. To ins ...

    Cleaning the exterior
    Wash your vehicle regularly with cool or lukewarm water and a neutral pH shampoo, such as Motorcraft® Detail Wash. • Do not use a commercial or high-pressure wand on the surface or edge of stripes and graphics. This can cause damage to the film and cause th ...