Removal and Installation

WARNING: This page is about a different car, the 2003 Ford Pickup, 2003 Ford F550 Super Duty, 2003 Ford F450 Super Duty, and 2003 Ford Excursion. However, it is still accessible from the selected car via links, so may be relevant.

All vehicles

Drain the cooling system. Refer to ENGINE COOLING .
Remove the nuts and position the vapor management valve and bracket aside.

Fig 1: Locating Nut Valve And Bracket
Courtesy of FORD MOTOR CO.
Release the clamp and disconnect the heater inlet hose (18472) from the engine.

Fig 2: Releasing Clamp And Disconnecting Heater Inlet Hose
Courtesy of FORD MOTOR CO.
Release the clamp and disconnect the heater hose from the engine.

Fig 3: Locating Clamp Heater Hose
Courtesy of FORD MOTOR CO.

Excursion only
Remove the heater control valve.
NOTE: Auxiliary climate control heater control valve is shown, non-auxiliary heater control valve is similar.
1. Disconnect the vacuum line.
2. Release the clamp and disconnect the heater hoses.
3. Remove the heater control valve.
Fig 4: Locating Hose Clamp
Courtesy of FORD MOTOR CO.

Vehicles equipped with auxiliary climate control
Release the clamp and disconnect the heater hose from the heater outlet hose.

Fig 5: Locating Clamp Heater Outlet Hose
Courtesy of FORD MOTOR CO.
Disconnect the heater hose couplings from the underbody auxiliary heater. Refer to CLIMATE CONTROL SYSTEM - GENERAL INFORMATION .

Fig 6: Locating Heater Hose Coupling
Courtesy of FORD MOTOR CO.

All vehicles
Disconnect the heater inlet and outlet hose couplings from the heater core. Refer to CLIMATE CONTROL SYSTEM - GENERAL INFORMATION .

Fig 7: Disconnecting Heater Inlet And Outlet Hose Couplings
Courtesy of FORD MOTOR CO.
To install, reverse the removal procedure.
- Lubricate the coolant hoses with MERPOL® meeting Ford specification ESE-M99B144-B or plain water only, if needed.