Ford Mustang (1999-2004) Service Manual: Thermostat - 3.8L

Material

Item Specification
Gasket Adhesive TA-6 or equivalent WSS-M2G408- A
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 Draining, Filling and Bleeding in this section.

2. Disconnect the upper radiator hose from the coolant hose connection.

Thermostat - 3.8L

3. Remove the thermostat housing.

  • Remove the bolts.

Thermostat - 3.8L

4. Remove the thermostat.

  • Clean and inspect the water outlet connection.
  • Discard the thermostat gasket, and clean and inspect the mating surface.

Thermostat - 3.8L

5. Clean and inspect the thermostat mating surface at the engine.

Thermostat - 3.8L

6. NOTE: The thermostat is indexed and must be returned to the original location.

NOTE: Coat the new thermostat gasket with gasket adhesive.

NOTE: Make sure the new O-ring gasket is secure around the thermostat.

To install, reverse the removal procedure.

7. Fill the cooling system. For additional information, refer to Cooling System Draining, Filling and Bleeding in this section.

    Heater Core Backflushing
    Special Tool(s) Flush Kit 164-R3658 or equivalent Drain Kit 164-R3662 or equivalent Material Item Specification Motorcraft Premium Cooling System Flush ...

    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 coola ...

    Other materials:

    Using snow chains
    WARNING: Driving too fast for conditions creates the possibility of loss of vehicle control. Driving at very high speeds for extended periods of time may result in damage to vehicle components. WARNING: Snow tires must be the same size, load index, speed ratin ...

    Removal
    NOTE: This procedure applies to both the LH and RH halfshafts. 1. CAUTION: The vehicle must be on level ground and at curb height. Mark the rear shock absorber relative to the protective sleeve. During installation, raise the suspension to this reference ...

    Evaporative Emission Test Port
    Removal and Installation 1. Disconnect the pin-type retainer. 2. Raise and support the vehicle. For additional information, refer to Section. 3. Remove the RH front wheel. For additional information, refer to Section. 4. Remove the RH front splash shiel ...