Removal and Installation

All vehicles 

1. Drain the cooling system. Refer to ENGINE COOLING .
2. Remove the nuts and position the vapor management valve (VMV) and bracket aside.
   Fig 1: Removing Nuts And Vapor Management Valve (VMV) And Bracket

   Courtesy of FORD MOTOR CO.
3. Release the clamp and disconnect the heater inlet hose (18472) from the engine.
   Fig 2: Disconnecting Heater Inlet Hose From Engine

   Courtesy of FORD MOTOR CO.
4. Release the clamp and disconnect the heater hose from the engine.
   Fig 3: Removing Clamp And Heater Hose From Engine

   Courtesy of FORD MOTOR CO.

   Vehicles equipped with heater control valve 

NOTE: Auxiliary climate control heater control valve is shown, non-auxiliary heater control valve is similar.
5. Remove the heater control valve.
   1. Disconnect the vacuum line.
   2. Release the clamps and disconnect the heater hoses.
   3. Remove the heater control valve.
      Fig 4: Removing Heater Hoses And Heater Control Valve

      Courtesy of FORD MOTOR CO.

   Vehicles equipped with auxiliary climate control 

6. Release the clamp and disconnect the heater hose from the heater outlet hose.
   Fig 5: Removing Clamp And Heater Hose From Heater Outlet Hose

   Courtesy of FORD MOTOR CO.
7. Remove the front splash shield (right side only). Refer to FRONT END BODY PANELS .
8. Disconnect the heater hose couplings from the underbody auxiliary heater lines.
   Fig 6: Disconnecting Heater Hose Couplings From Underbody Auxiliary Heater Lines

   Courtesy of FORD MOTOR CO.

   All vehicles 

9. Disconnect the heater inlet and outlet hose couplings from the heater core.
   Fig 7: Disconnecting Heater Inlet And Outlet Hose Couplings From Heater Core

   Courtesy of FORD MOTOR CO.
10. To install, reverse the removal procedure.
    • Clean and lubricate the coolant hoses with plain water only if needed.
11. Fill the engine cooling system. Refer to ENGINE COOLING