Heating & Ventilation Ford Explorer Sport Trac I

GENERAL SPECIFICATION

GENERAL SPECIFICATION

TORQUE SPECIFICATIONS

TORQUE SPECIFICATIONS

HEATING/DEFROSTING

The heating and ventilation system operates as follows

1. Controls the temperature and during climate control operation, reduces the relative humidity of the air inside the vehicle.
2. Delivers heated or cooled air to maintain the vehicle interior temperature and comfort level.
3. The blower motor (19805) draws either outside or inside air through the A/C recirculating air duct (19C590) from just below the windshield depending on the function selector switch position. For additional information on air distribution, see «AIR DISTRIBUTION»(/ford/explorer-sport-trac/i-2000-2005/remont/general-servicing-all-makes/#air-distribution-filtering) in AIR DISTRIBUTION & FILTERING article.
4. All airflow from the blower motor passes through the A/C evaporator core (19860).
5. The temperature is then regulated by reheating a portion of the air and blending it with the remaining cool air to the desired temperature.
6. The temperature blending is varied by the temperature blend door, which regulates the amount of air that flows through and around the heater core (18476), where it is then mixed and distributed.

Evaporator Core Housing

The evaporator core housing is located in the engine compartment.

The A/C evaporator housing assembly contains the following major components

1. A/C Evaporator Core
2. Blower Motor
3. Blower Motor Resistor

Heater Core

The heater core consists of fins and tubes arranged to extract heat from the engine coolant and transfer it to air passing through the heater core.

Blower Motor

The blower motor pulls air from the air inlet and forces it into the plenum assembly where it is mixed and distributed.

Floor Console

Vehicles equipped with the high series flow-thru floor console have a ventilation system for second row passengers.

The high series flow-thru floor console has the following features

1. The center console is supplied with air from the plenum chamber through an auxiliary duct to the second row blower motor.
2. The second row blower motor, mounted in the center console, increases the air flow to the auxiliary floor duct and registers.
3. A mechanically actuated air management door controls airflow to either the auxiliary registers or the auxiliary floor vent.
4. The blower switch and air management door control switch are located in the second row climate control assembly, located in the rear of the center console.

See CLIMATE CONTROL SYSTEM - GENERAL INFORMATION article.

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1. Prepare the vehicle for blower motor (19805) removal. Disconnect the battery ground cable (14301). Remove the air cleaner assembly.
2. Detach the speed control servo. Disconnect the electrical connector. Remove the bolt. Position the speed control servo aside.
3. Position the coolant expansion tank/windshield washer reservoir aside. Remove the screws and the nuts. Position the coolant expansion tank/windshield washer reservoir aside.
4. Remove the blower motor. Disconnect the vent hose. Disconnect the electrical connector. Remove the four screws. Remove the blower motor.
5. To install, reverse the removal procedure.

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1. Remove the floor console.
2. Remove the coin tray.
3. Remove the screws and the console insert.
4. Remove the screw and the console lid.
5. Remove the screws.
6. Open the rear cupholder. Remove the screws.
7. Remove the two screws.
8. Disengage the retaining clips. Remove the console rear finish panel.
9. Remove the screws.
10. Disconnect the electrical connectors. Disengage the pin-type retainer.
11. Disconnect the air distribution door linkage from the second row climate control assembly arm. Remove the second row climate control assembly.
12. Remove the screws and the console rear air distribution duct.
13. Remove the nine screws and the console liner.
14. Remove the nuts.
15. Remove the screws.
16. Remove the two screws.
17. Disconnect the blower motor resistor.
18. Disengage the pin-type retainer.
19. Slide the console reinforcement rearward. Partially remove the blower motor and air distribution duct assembly.
20. Disconnect the blower motor electrical connector.
21. Remove the screws. Remove the blower motor assembly from the console air distribution duct.

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1. Align the blower motor assembly (15140) with the console air distribution duct. Install the screws.
2. Connect the blower motor electrical connector.
3. Position and align the studs of the blower motor and air distribution duct assembly to the console reinforcement.
4. Slide the console reinforcement forward.
5. Engage the pin-type retainer.
6. Connect the blower motor resistor electrical connector.
7. Install the two screws.
8. Install the two screws.
9. Install the nuts.
10. Install the console liner and the nine screws.
11. Install the console rear air distribution duct and the screws.
12. Connect the air distribution door linkage to the second row climate control assembly arm.
13. Connect the electrical connectors. Engage the pin-type retainer.
14. Position the second row climate control assembly. Install the screws.
15. Align the console rear finish panel to the floor console. Engage the retaining clips.
16. Install the screws.
17. Install the screws.
18. Install the screws.
19. Install the console lid and the screw.
20. Install the console insert and the screws.
21. Install the coin tray.
22. Install the floor console.

Removal & Installation

Note. The evaporator core is not separately serviceable, it is serviced only with the evaporator core housing assembly.

Note. Replacement of the suction accumulator is not required when repairing the refrigerant system except when there is physical evidence of system contamination from a failed A/C compressor or damage to the suction accumulator.

Note. If an evaporator core leak is suspected, the evaporator core must be leak tested before it is removed from the vehicle. For additional information, see A/C EVAPORATOR/CONDENSER CORE -- ON-VEHICLE LEAK TEST in CLIMATE CONTROL SYSTEM - GENERAL INFORMATION article.

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1. Remove the suction accumulator (19C836). For additional information, see «SUCTION ACCUMULATOR»(/ford/explorer-sport-trac/i-2000-2005/remont/manual-hvac-system/#air-conditioning) in AIR CONDITIONING article.
2. Disconnect the blower motor and the blower motor resistor electrical connectors.
3. Detach the windshield wiper fluid hose. Using suitable hose pinching pliers, disconnect the heater hoses.
4. Detach the heater control valve vacuum hose.
5. Disconnect the heater control valve vacuum hose and the vacuum supply hose.
6. Disconnect the condenser to evaporator tube spring lock coupling. For additional information, see «SPRING LOCK COUPLING»(/ford/explorer-sport-trac/i-2000-2005/remont/manual-hvac-system/#climate-control-system-general-information) in CLIMATE CONTROL SYSTEM - GENERAL INFORMATION article.
7. Disconnect the vacuum harness connector. Remove the nut.
8. Remove two nuts, one bolt, and the A/C evaporator housing (19850). Remove the nut located at the bottom of the A/C evaporator housing first. To remove the A/C evaporator housing, rotate the A/C evaporator housing counterclockwise. Then tip the evaporator core end towards the front of the vehicle.
9. To install, reverse the removal procedure. Lubricate the refrigerant system with the correct amount of clean PAG Refrigerant Compressor Oil (R-134a Systems) or equivalent. For additional information, see «REFRIGERANT OIL ADDING»(/ford/explorer-sport-trac/i-2000-2005/remont/manual-hvac-system/#climate-control-system-general-information__refrigerant-oil-adding) in CLIMATE CONTROL SYSTEM - GENERAL INFORMATION article. Install new O-ring seals lubricated in amount of clean PAG Refrigerant Compressor Oil (R-134a Systems) or equivalent. Lubricate the coolant hoses with MERPOL(R) or plain water only, if needed.

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1. Prepare the vehicle for heater core removal. Remove the A/C evaporator housing (19850). For additional information, see «EVAPORATOR CORE»(/ford/explorer-sport-trac/i-2000-2005/remont/manual-hvac-system/#air-conditioning) in AIR CONDITIONING article. Remove the instrument panel (04320). For additional information, see «INSTRUMENT PANEL»(/ford/explorer-sport-trac/i-2000-2005/remont/gauges-instrument-panels/#instrument-panel-console) in GAUGES & INSTRUMENT PANELS article. Remove the powertrain control module (PCM) (12A650). For additional information, see «POWERTRAIN CONTROL MODULE»(/ford/explorer-sport-trac/i-2000-2005/remont/removal-installation/#how-to-overhaul-installation-the-engine-controls-removal) in REMOVAL, OVERHAUL & INSTALLATION article.
2. Remove the PCM heat sink. Remove the ground strap screw. Remove the heat sink.
3. Remove the four nuts from the engine side of the dash panel. Position the plenum chamber (18471) on the vehicle floor.
4. Remove the heater core cover. Remove the screws. Remove the heater core cover.
5. Remove the heater core. During installation, be sure to install a new oval foam seal around the heater core inlet and outlet tubes.
6. To install, reverse the removal procedure.

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1. Prepare the vehicle for heater water control valve assembly (18495) removal. Drain the engine coolant. Remove the air cleaner assembly.
2. Disconnect the vacuum hose and heater hose.
3. Remove the retaining pins. Position the inner fender well access mat out of the way.
4. Disconnect the heater hose. Remove the bolt and the heater water control valve assembly.
5. To install, reverse the removal procedure. Lubricate the coolant hoses with MERPOL(R) meeting Ford specification ESE-M99B144-B or plain water only, if needed.

See also:
• AIR DISTRIBUTION
• CLIMATE CONTROL SYSTEM - GENERAL INFORMATION
• A/C EVAPORATOR/CONDENSER CORE -- ON-VEHICLE LEAK TEST
• SUCTION ACCUMULATOR
• REFRIGERANT OIL ADDING
• HEATER CORE
• INSTRUMENT PANEL
• POWERTRAIN CONTROL MODULE