Engine Cooling System: Other Ford Taurus IV рестайлинг

Material

MATERIALS

Cooling Fans

The cooling fans are controlled by four relays to provide three speeds. If DTC P1474, P1477 or P1479 are present, See INTRODUCTION - GASOLINE for diagnosis.

In HIGH speed, the cooling fans are wired parallel and the following relays are grounded by the PCM

1. Fan braking relay.
2. Engine cooling fan relay.

In MEDIUM speed, the cooling fans are wired parallel through a resistor and the following relays are grounded by the PCM

1. Fan braking relay.

In LOW speed, the cooling fans are wired in series and the following relays are grounded by the PCM

1. Fan braking relay.
2. Engine cooling fan relay.
3. HEDF and EDF relay.

Cap

1. Make sure the engine is cool.
2. Wrap a thick cloth around the coolant pressure relief cap on the coolant reservoir. Slowly turn the cap counterclockwise (left) until the pressure begins to release.
3. Step back while the pressure releases.
4. When you are sure all the pressure has been released, use the cloth to turn and remove the cap.
5. Immerse the pressure relief cap in water and install it on the shallow filler neck of Radiator/Heater Core Pressure Tester and Radiator Cap Adapter, part of Radiator/Heater Core Pressure Tester.
6. Immerse the filler neck seal in water and install it in the filler neck adapter.
7. Install the filler neck adapter with the filler neck seal to the Radiator Cap Adapter.
8. Connect the female quick-connect fitting of the pressure test pump to the male quick-connect fitting of the filler neck adapter.
9. Slowly depress the plunger of the pressure test pump until the pressure gauge reading stops increasing and note the highest pressure reading obtained.
10. 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 specifications of the pressure relief cap.
11. 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

A new thermostat should be installed only after a thermostat electrical test has been 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.

1. Check the engine coolant level. Fill as needed.
2. With the ignition OFF, remove the engine coolant temperature (ECT) sensor harness connector and attach ECT Sensor "T" Cable as a jumper between the powertrain control module and the ECT Sensor. Attach the 73III Automotive Meter to the ECT Sensor "T" Cable. Voltage values (0-5 V) may now be monitored while the sensor retains its connection to the wiring harness. A Diagnostic tool or the Service Bay Diagnostic System (SBDS) may be used to monitor the ECT. The SBDS sequence to use for the screen is: Toolbox-Electronic Engine Control and DCL-Item.
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. Record the ECT voltage every 60 seconds. When the ECT voltage trend changes direction or only changes slightly (0.03 volt or less) from the previous reading, record this as the thermostat opening voltage. Use the voltage and corresponding coolant temperature chart listed below. COOLANT TEMPERATURE CHART Coolant Temperature °C (°F) ECT (Volts) 20 (68) 3.14 45 (113) 2.98 70 (158) 1.08 75 (167) 0.94 82 (180) 0.75 90 (194) 0.64 95 (202) 0.53 100 (212) 0.49 105 (221) 0.43
5. If the thermostat opening voltage is greater than 0.94 volt and less than 75°C (167°F), or less than 0.53 and greater than 95°C (202°F), install a new thermostat.
6. If the thermostat opening voltage is less than 0.75 volt and greater than 82°C (180°F) or greater than 0.50 and less than 97°C (206°F), the water thermostat is good and a new thermostat should not be installed. GO to «SYMPTOM CHART»(ref-233700-S27364983742006052600000) for further instructions.

MATERIALS

Filling and Bleeding with RADKITPLUS

1. Using the special tool, install the RADKITPLUS and follow the RADKITPLUS manufacturer's instructions to fill and bleed the cooling system.

Filling without RADKITPLUS

Note. The addition of Cooling System Stop Leak Pellets, VC-6, darkens Motorcraft Premium Gold Engine Coolant from yellow to golden tan.

Scheme 33

1. Install the front splash shield and the 10 retainers. Tighten the 3 bolts to 7 Nm (62 lb-in).
2. Lower the vehicle.
3. Fill the degas bottle with the correct engine coolant mixture.
4. Install the pressure relief cap.
5. Move the temperature blend selector to the full warm position.
6. Run the engine until it reaches operating temperature.
7. Add the correct engine coolant mixture to the degas bottle until the coolant level is between the COOLANT FILL LEVEL marks.
8. Turn off the engine and allow the cooling system to cool. Recheck the coolant level and fill the cooling system to the FULL mark on the degas bottle.
9. Repeat Steps 3 through 8 until the reservoir level is OK.

Bleeding without RADKITPLUS

1. Bleed the cooling system as follows

1. Select the maximum heater temperature and blower motor speed settings. Position the control to discharge air from the A/C vents in the instrument panel.
2. Start the engine and allow it to idle. While the engine is idling, feel for hot air from the A/C vents.
3. Start the engine and allow it to idle until the normal operating temperature is reached. Hot air should discharge from the A/C vents. The engine coolant temperature gauge should maintain a stabilized reading in the middle of the normal range, and the upper radiator hose should feel hot to the touch.
4. Shut the engine off and allow it to cool.
5. Check the engine for coolant leaks.
6. Check the engine coolant level in the degas bottle and fill it as necessary.

MATERIALS

1. Drain the cooling system. For additional information, refer to «COOLING SYSTEM DRAINING, FILLING AND BLEEDING»(ref-233700-S21960513852006052600000) .
2. Remove the water thermostat.
3. Install the water hose connection without the water thermostat.
4. Using a suitable coolant system flushing tool and premium flush, flush the engine and radiator.
5. Install the water thermostat.
6. Backflush the heater core if necessary.
7. Fill the cooling system. For additional information, refer to «COOLING SYSTEM DRAINING, FILLING AND BLEEDING»(ref-233700-S21960513852006052600000) .

Scheme 34

1. Drain the cooling system. For additional information, refer to «COOLING SYSTEM DRAINING, FILLING AND BLEEDING»(ref-233700-S21960513852006052600000) .
2. Raise the vehicle. For additional information, refer to «JACKING & LIFTING»(ref-233684) .
3. Disconnect the block heater power cable from the block heater (6A051).
4. Remove the block heater.
5. To install, reverse the removal procedure.

Scheme 35

Scheme 36

1. Drain the engine cooling system. For additional information, refer to «COOLING SYSTEM DRAINING, FILLING AND BLEEDING»(ref-233700-S21960513852006052600000) .
2. Remove the three thermostat housing bolts.
3. Remove the thermostat O-ring seal. Inspect the sealing surfaces.
4. To install, reverse the removal procedure.

Scheme 37

Scheme 38

Scheme 39

1. Raise and support the vehicle. For additional information, refer to «JACKING & LIFTING»(ref-233684) .
2. Remove the front splash shield. For additional information, refer to «FRONT END BODY PANELS»(ref-233729) .
3. Drain the cooling system. For additional information, refer to «COOLING SYSTEM DRAINING, FILLING AND BLEEDING»(ref-233700-S21960513852006052600000) .
4. Remove the cooling tube bolt.
5. Lower the vehicle.
6. Remove the radiator upper cooling tube bolt.
7. Disconnect the upper radiator hose, engine vent hose and thermostat housing hose.
8. Remove the three bolts, and separate the thermostat housing. Remove the thermostat and the O-ring. Discard the O-ring.
9. To install, reverse the removal procedure. Clean all sealing surfaces.

Scheme 40

Scheme 41

Scheme 42

Scheme 43

Scheme 44

1. Raise and support the vehicle. For additional information, refer to «JACKING & LIFTING»(ref-233684) .
2. Remove the front splash shield. For additional information, refer to «FRONT END BODY PANELS»(ref-233729) .
3. Drain the cooling system. For additional information, refer to «COOLING SYSTEM DRAINING, FILLING AND BLEEDING»(ref-233700-S21960513852006052600000) .
4. Disconnect the lower radiator hose and the reservoir supply hose, and remove the radiator lower tube bolt.
5. Lower the vehicle.
6. Release the tabs on the power distribution box and position aside.
7. Disconnect the oxygen sensor connector retainer and harness pin-type retainer.
8. Remove the radiator upper tube bolt, and disconnect the radiator vent tube.
9. Remove the radiator tube assembly. Disconnect the upper radiator hose and the engine vent hose, and position aside. Disconnect the radiator tube assembly and remove from the vehicle.
10. To install, reverse the removal procedure.

Scheme 45

Scheme 46

Scheme 47

Scheme 48

Scheme 49

Scheme 50

1. With the vehicle in NEUTRAL, position it on a hoist. For additional information, refer to «JACKING & LIFTING»(ref-233684) .
2. Drain the cooling system. For additional information, refer to «COOLING SYSTEM DRAINING, FILLING AND BLEEDING»(ref-233700-S21960513852006052600000) .
3. Remove the air cleaner assembly. For additional information, refer to «INTAKE AIR DISTRIBUTION & FILTERING»(ref-233699) .
4. Remove the battery and battery tray. For additional information, refer to «BATTERY, MOUNTING AND CABLES»(ref-233724) .
5. Disconnect the upper radiator hose, the thermostat housing hose and the heater hose.
6. Disconnect and remove the radiator bypass hose assembly.
7. Remove the pin-type retainer, disconnect the engine coolant temperature (ECT) sensor electrical connector and position the harness aside.
8. Remove the bolts and the roll restrictor bracket.
9. Remove the bolts and the roll restrictor.
10. Remove the bolt, the stud and the coolant bypass tube. Remove and discard the O-ring and gasket.
11. To install, reverse the removal procedure.
12. Clean the sealing surfaces and install a new gasket and O-ring.

Scheme 51

Scheme 52

Scheme 53

Scheme 54

Scheme 55

Scheme 56

Scheme 57

Scheme 58

1. Drain the engine cooling system. For additional information, refer to «COOLING SYSTEM DRAINING, FILLING AND BLEEDING»(ref-233700-S21960513852006052600000) .
2. Loosen the water pump pulley.
3. Remove the accessory drive belt. For additional information, refer to «ACCESSORY DRIVE»(ref-233714) .
4. Remove the degas bottle. For additional information, refer to «DEGAS BOTTLE»(ref-233700-S12352013232006052600000) .
5. Disconnect the battery ground cable. For additional information, refer to «BATTERY, MOUNTING AND CABLES»(ref-233724) .
6. Disconnect the generator B+ cable and the voltage regulator electrical connector.
7. Remove the nut, the bolt and the generator brace.
8. Remove the generator mounting bolt and the generator.
9. Remove the bolt and the nut, and position the roll restrictor bracket out of the way.
10. Remove the bolt and the accessory drive belt tensioner.
11. Remove the nut, the bolt and the support bracket.
12. Remove the bolts and the water pump pulley.
13. Disconnect the water pump inlet hose and the crankshaft position sensor electrical connector.
14. Remove the bolts and the water pump, and clean the sealing surfaces.

Scheme 59

Scheme 60

Scheme 61

Scheme 62

Scheme 63

Scheme 64

Scheme 65

Scheme 66

Scheme 67

1. Install the water pump. Tighten bolts in the sequence shown: Tighten numbers 1-7 to 25 Nm (18 lb-ft). Tighten numbers 8-12 to 10 Nm (89 lb-in).
2. Connect the crankshaft position sensor electrical connector and the water pump inlet hose.
3. Install the support bracket, the nut and the bolt.
4. Install the accessory drive belt tensioner and the bolt.
5. Install the water pump pulley and the bolts.
6. Install the roll restrictor bracket, the bolt and the nut. Do not tighten at this time.
7. Install the generator and the mounting bolt. Do not tighten at this time.
8. Install the generator brace, the nut and the bolt.
9. Tighten the generator lower mounting bolt.
10. Tighten the roll restrictor bracket bolt and nut.
11. Connect the generator electrical connectors. Connect the B+ cable. Connect the voltage regulator electrical connector.
12. Install the accessory drive belt. For additional information, refer to «ACCESSORY DRIVE»(ref-233714) .
13. Install the degas bottle. For additional information, refer to «DEGAS BOTTLE»(ref-233700-S12352013232006052600000) .
14. Connect the battery ground cable. For additional information, refer to «BATTERY, MOUNTING AND CABLES»(ref-233724) .
15. Fill the engine cooling system. For additional information, refer to «COOLING SYSTEM DRAINING, FILLING AND BLEEDING»(ref-233700-S21960513852006052600000) .

Scheme 68

Scheme 69

Scheme 70

Scheme 71

1. With the vehicle in NEUTRAL, position it on a hoist. For additional information, refer to «JACKING & LIFTING»(ref-233684) .
2. Remove the air cleaner assembly. For additional information, refer to «INTAKE AIR DISTRIBUTION & FILTERING»(ref-233699) .
3. Remove the battery and the battery tray. For additional information, refer to «BATTERY, MOUNTING AND CABLES»(ref-233724) .
4. Remove the coolant pump belt. For additional information, refer to «ACCESSORY DRIVE»(ref-233714) .
5. Drain the cooling system. For additional information, refer to «COOLING SYSTEM DRAINING, FILLING AND BLEEDING»(ref-233700-S21960513852006052600000) .
6. Disconnect the heater hose from the bottom of the coolant pump.
7. Remove the radiator lower tube bolt.
8. Remove the radiator upper front tube bolt.
9. Disconnect the upper radiator hose, the heater hose and the thermostat housing hose.
10. Remove the radiator bypass hose assembly.
11. Remove the pin-type retainer, disconnect the engine coolant temperature (ECT) sensor electrical connector and position the harness aside.
12. Remove the three bolts, and reposition the coolant pump to access the remaining hoses.
13. Loosen the clamps, disconnect the hoses and remove the coolant pump.

Scheme 72