Engine Cooling: Other Lincoln Aviator I

Possible Causes

1. Defective fuse.
2. An open or short to ground in circuit 1153 (RD/BK).
3. An open or short to power in circuit 1154 (WH/BK).
4. Defective cooling fan relay.
5. An open or short to ground in circuit 1155 (YE/BK).
6. Defective cooling fan motor.
7. An open or short to power in circuit 1205 (BK).

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1. A short to ground in circuit 1154 (WH/BK).
2. A short to ground in circuit 1155 (YE/BK).
3. A short to power in circuit 1205 (BK).
4. A defective cooling fan relay.
5. A defective A/C high pressure switch.

Scheme 20

Cap

1. Remove the pressure relief cap from the degas bottle.
2. Immerse the pressure relief cap in water and install it on the shallow filler neck of the Radiator/Heater Core Pressure Tester and Radiator Cap Adapter, part of the Radiator/Heater Core Pressure Tester.
3. Immerse the filler neck seal in water and install it in the filler neck adapter.
4. Install the filler neck adapter with the filler neck seal to the Radiator Cap Adapter.
5. Connect the female quick-connect fitting of the pressure test pump to the male quick-connect fitting of the filler neck adapter.
6. Slowly depress the plunger of the pressure test pump until the pressure gauge reading stops increasing and note the highest pressure reading obtained.
7. Release the pressure by turning the relief screw counterclockwise. Then tighten the pressure relief screw and repeat Step 6 (at least twice) to make sure the reading is repeatable within the specification of the pressure relief cap.
8. If the pressure test gauge readings are not within specifications, install a new pressure relief cap. If the pressure test gauge readings are within specifications, carry out the cooling system Pressure Test.

Thermostat

Install a new water thermostat only after the following electrical and mechanical tests are carried out.

Thermostat - Electrical Test

Note. The electrical thermostat test is most accurate if carried out indoors at less than 37.8°C (100°F) ambient air. This test may be carried out with or without the hood open and with the engine warm or cold.

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1. Check the engine coolant level. Fill as needed.
2. Use the scan tool to monitor the ECT voltage/temperature on vehicles equipped with data link connector (DLC). NOTE: Running this test with the vehicle in gear or with the A/C compressor clutch engaged (running) will cause incorrect diagnoses.
3. Place the transmission in PARK (P) or NEUTRAL (N).
4. Start the engine and allow the engine to idle throughout this test. Allow the engine to run for two minutes, then record the ECT voltage/temperature. Record the ECT voltage/temperature every 60 seconds. When the ECT voltage/temperature trend changes direction or only changes slightly (0.03 volt or less) from the previous reading, record this as the thermostat opening voltage/temperature. Use the voltage and corresponding coolant temperature chart listed below.
5. If the thermostat opening voltages are not between 0.79 volt or 84°C (183°F) and 0.54 volt or 99°C (210°F), install a new water thermostat.
6. If the thermostat opening voltages are within the specified range, the water thermostat is good and a new thermostat is not required. GO to «SYMPTOM CHART»(ref-193003-S22834014702005092300000) for additional instructions.

Thermostat - Mechanical Test

1. Remove the water thermostat.
2. Check the water thermostat for seating. Hold the water thermostat up to a lighted background. Leakage of light around the thermostat valve at room temperature indicates that a new water thermostat is required. Some water thermostats have a small leakage notch at one location on the perimeter of the thermostat valve, which is considered normal.
3. Immerse the water thermostat in a boiling antifreeze and water mixture.
4. See the General Specifications chart for water thermostat opening temperatures.

Filling

1. Add Motorcraft Premium Engine Coolant VC-4-A (in Canada CXC-10, in Oregon VC-5) meeting Ford specification ESE-M97B44-A (green color) or Motorcraft Premium Gold Engine Coolant VC-7-A (in Oregon VC-7-B) meeting Ford specification WSS-M9B51-A1. Use the same coolant that was drained from the cooling system. Do not mix coolant types.
2. Do not add orange-colored extended life coolant such as VC-2, meeting Ford specification WSS-M97B44-D. Mixing coolants can degrade the coolant's corrosion protection.
3. Do not add alcohol, methanol, or brine, or any engine coolants mixed with alcohol or methanol antifreeze. These can cause engine damage from overheating or freezing.
4. Do not mix recycled coolant unless it meets the requirements of specification ESE-M97B44-A or WSS-M97B51-A1. Not all coolant recycling processes meet these specifications; use of such coolants can harm the engine and cooling system components. Remove the engine appearance cover.

Rear (Auxiliary) Heater Core Filling

Scheme 23

1. Remove the pressure relief cap.
2. Prepare to fill the rear heater core. Remove the engine crossover fill plug. Disconnect the heater supply hose from the engine crossover tube. Clamp the front heater supply hose between the heater core and the coolant shut-off valve.
3. Raise the heater supply hose to the maximum possible elevation and, using a funnel, slowly pour approximately 2 liters of coolant into the heater supply hose.
4. Remove the clamp from the front heater core supply hose.
5. Connect the heater supply hose to the engine crossover tube.
6. Install the engine crossover tube fill plug.
7. Install the pressure relief cap and tighten until two audible clicks are heard.

Scheme 24

1. Remove the pressure relief cap.
2. Prepare to fill the front heater core. Remove the engine crossover fill plug. Disconnect the heater supply hose from the crossover tube. Clamp the rear (auxiliary) heater core supply hose below the system supply line tee.
3. Raise the heater supply hose to the maximum possible elevation and, using a funnel, pour approximately 1 liter of coolant into the hose.
4. Remove the clamp from the rear heater core supply hose.
5. Connect the heater supply hose to the engine crossover tube.
6. Install the engine crossover tube fill plug.
7. Install the pressure relief cap and tighten until two audible clicks are heard.

Engine and Radiator Filling

1. Remove the pressure relief cap.
2. Remove the engine crossover fill plug.
3. Add coolant at the engine crossover fill until the level of the coolant in the degas bottle is at the MAX cold fill line.
4. Install the engine crossover fill plug.
5. Install the pressure relief cap and tighten until two audible clicks are heard.
6. Install the engine appearance cover.

Deaeration

1. Start the engine.
2. Select the defrost mode on the DATC module.
3. Run the engine at 2000 rpm until the thermostat opens (approximately 10-15 minutes) indicated by a drop in the degas bottle coolant level.
4. Set the climate control system to maximum heat and run the engine for an additional 2 minutes at 2000 rpm.
5. After the system has cooled, carefully remove the pressure relief cap.
6. Top off the coolant level to the MAX fill line.
7. Install the pressure relief cap and tighten until two audible clicks are heard.

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1. Drain the cooling system. For additional information, refer to «COOLING SYSTEM DRAINING, FILLING AND BLEEDING»(ref-193003-S23731603382005092300000) .
2. Remove the thermostat. For additional information, refer to «THERMOSTAT AND THERMOSTAT HOUSING»(ref-193003-S16300684392005092300000) .
3. Install the water hose connection without the thermostat.
4. Use cooling system Pro Flush and Fill, Flush Kit and Drain Kit to flush the engine and radiator.
5. Install the thermostat. For additional information, refer to «THERMOSTAT AND THERMOSTAT HOUSING»(ref-193003-S16300684392005092300000) .
6. Fill the cooling system. For additional information, refer to «COOLING SYSTEM DRAINING, FILLING AND BLEEDING»(ref-193003-S23731603382005092300000) .

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1. Drain the cooling system. For additional information, refer to «COOLING SYSTEM DRAINING, FILLING AND BLEEDING»(ref-193003-S23731603382005092300000) .
2. Raise the vehicle.
3. Remove the components in the order indicated in the following illustration.
4. To install, reverse the removal procedure.
5. Fill and bleed the cooling system. For additional information, refer to «COOLING SYSTEM DRAINING, FILLING AND BLEEDING»(ref-193003-S23731603382005092300000) .

Item 2: Block Heater Retaining Screw Removal Note

1. Loosen the block heater retaining screw.

Item 3: Block Heater Installation Note

1. Clean and inspect the engine block mating surface before installing the block heater. Lubricate the block heater seal and the cylinder block hole with clean engine coolant to ease installation.

Item 1: Block Heater Power Cable Installation Note

1. Make sure the power cable is routed and secured away from rotating or hot components or damage to the cable can occur.

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1. Drain the cooling system. For additional information, refer to «COOLING SYSTEM DRAINING, FILLING AND BLEEDING»(ref-193003-S23731603382005092300000) .
2. Raise the vehicle.
3. Remove the oil filter drip shield.
4. Remove the components in the order indicated in the following illustration.
5. To install, reverse the removal procedure.
6. Fill and bleed the cooling system. For additional information, refer to «COOLING SYSTEM DRAINING, FILLING AND BLEEDING»(ref-193003-S23731603382005092300000) .

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1. Drain the cooling system. For additional information, refer to «COOLING SYSTEM DRAINING, FILLING AND BLEEDING»(ref-193003-S23731603382005092300000) .
2. Remove the cooling fan. For additional information, refer to «COOLING FAN»(ref-193003-S04455054362005092300000) .
3. Remove the upper fan shroud. For additional information, refer to «RADIATOR, COOLING FAN AND SHROUD, AND DEGAS BOTTLE»(ref-193003-S20596448032005092300000) .
4. Remove the accessory drive belt. For additional information, refer to «ENGINE»(ref-193002) .
5. Remove the components in the order indicated in the following illustration.
6. To install, reverse the removal procedure.
7. Fill and bleed the cooling system. For additional information, refer to «COOLING SYSTEM DRAINING, FILLING AND BLEEDING»(ref-193003-S23731603382005092300000) .

Item 5: Water Pump O-Ring Installation Note

1. Install a new O-ring seal and lubricate with clean engine coolant before installing the pump.

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1. Remove the components in the order indicated in the following illustration and table.
2. To install, reverse the removal procedure.

Item 3: Clutch Removal Note

1. Using the special tools, remove the fan and clutch as an assembly.

Item 3: Clutch Installation Note

Scheme 35

1. Using the special tools, install the fan and clutch as an assembly.

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1. Drain the cooling system. For additional information, refer to «COOLING SYSTEM DRAINING, FILLING AND BLEEDING»(ref-193003-S23731603382005092300000) .
2. Remove the front air deflector.
3. Remove the fan clutch. For additional information, refer to «COOLING FAN»(ref-193003-S04455054362005092300000) .
4. Remove the components in the order indicated in the following illustration. To remove individual components, only carry out the listed steps.
5. To install, reverse the removal procedure.
6. Fill and bleed the cooling system. For additional information, refer to «COOLING SYSTEM DRAINING, FILLING AND BLEEDING»(ref-193003-S23731603382005092300000) .

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1. Drain the cooling system. For additional information, refer to «COOLING SYSTEM DRAINING, FILLING AND BLEEDING»(ref-193003-S23731603382005092300000) .
2. Recover the refrigerant. For additional information, refer to «CLIMATE CONTROL SYSTEM»(ref-193016) .
3. Remove the fan shroud. For additional information refer to «RADIATOR, COOLING FAN AND SHROUD, AND DEGAS BOTTLE»(ref-193003-S20596448032005092300000) .
4. Remove the components in the order indicated in the following illustration.
5. To install, reverse the removal procedure.
6. Fill and bleed the cooling system. For additional information, refer to «COOLING SYSTEM DRAINING, FILLING AND BLEEDING»(ref-193003-S23731603382005092300000) .

Item 4: Condenser Inlet Tube Removal Note

1. Release the condenser inlet tube from the retaining clips and position aside.

Item 7: Condenser Outlet Tube Removal Note

1. Disconnect and position aside.

Item 8: Transmission Oil Cooler Lines Removal Note

1. Using the special tool, disconnect the quick couplers.

Item 11: Cooling Module Removal Note

1. Lift the cooling module up and toward the engine to remove it from the vehicle.

Item 8: Transmission Oil Cooler Lines Installation Note

1. Connect the fittings and pull on them to make sure they are fully engaged.

Item 7: Condenser Outlet Tube Installation Note

1. Install new O-rings lubricated in clean PAG oil.

Item 4: Condenser Inlet Tube Installation Note

1. Install new O-rings lubricated in clean PAG oil.