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:

    Transmission (Assembly)
    Special Tool(s) Dial Indicator with Bracketry 100-002 (TOOL-4201-C) or Equivalent Gauge, Clutch Housing 308-021 (T75L-4201-A) Extension Housing Seal Replacer 308-227 (T94P-7657-A) Holding Fixture 307-0 ...

    Pinpoint Test E: LFC 15/DTC B1916 - Driver Air Bag Circuit Shorted to Battery or Ignition
    Normal Operation The restraints control module (RCM) checks for driver air bag circuit shorts to battery or ignition by monitoring the voltage of circuit 614 (GY/OG) and 615 (GY/WH) at pins 3 and 4. If the RCM detects a short to battery or ignition on e ...

    Exhaust Manifold RH
    Special Tool(s) Lifting Bracket, Engine 303-D088 (D93P-6001-A2) Support Bar, Engine 303-290-A Removal and Installation 1. Install the special tool. 2. Install the special tools. 3. Raise and support the vehicle. For additional ...