Ford Galaxy / Ford S-MAX. Manual — part 323

settles into a shallow rise and fall signal, close to a straight line. This indicates that

the thermostat is functioning correctly.

NOTE: Some thermostats indicate the temperature(s) in Celsius and Fahrenheit.

The graphic below shows the location and an example of the opening temperature (88ºC)
and fully open temperature (102ºC) of a thermostat.

The graphic below shows an alternative method used to show the opening temperature
(88ºC) and fully open temperature (112ºC) of a thermostat.

Description

Opening temperature

Fully open temperature

NOTE: Generally, most thermostats maintain a coolant temperature between 88ºC
(190ºF) and 92ºC (198ºF) although dual stage electric thermostats may increase the
coolant temperature up to 100ºC (212ºF) under light engine load conditions.

The engine should start cleanly and the ECT value will rise quite quickly with smooth
progression. If the ECT signal appears unstable or erratic, the ECT sensor, electrical
connector and wiring harness to the PCM need to be visually inspected for damage, chafing
or water ingress.

The temperature should rise to approximately 90ºC for a thermostat that has an 88ºC
value. The signal value will then fall as cooler coolant enters the engine.

If the ECT value fails to maintain a constant value and falls back to lower figures, typically
between 60ºC (140ºF) and 70ºC (150ºF), the thermostat and its sealing function within the
thermostat housing must be checked.

5. 5. INSTALL a new thermostat.

REFER to:

Thermostat - 2.0L Duratec-HE (107kW/145PS) - MI4/2.0L Duratec-HE

Flex Fuel (107kW/145PS) - MI4

(303-03A Engine Cooling - 2.0L Duratec-HE

(107kW/145PS) - MI4/2.0L Duratec-HE Flex Fuel (107kW/145PS) - MI4/2.3L
Duratec-HE (118kW/160PS) - MI4, Removal and Installation).

6. 6. Carry out another road test from step 1 using the same criteria to confirm that the

concern has been rectified.

7. 7. Using the Ford approved diagnostic tool, clear the PCM keep alive memory (KAM)

Item

A

B

Part Number

-

-

or electrically erasable programmable read only memory (EEPROM) so that new drive

values can be learnt.

Engine Cooling - 2.0L Duratec-HE
(107kW/145PS) - MI4/2.0L Duratec-HE
Flex Fuel (107kW/145PS) - MI4/2.3L
Duratec-HE (118kW/160PS) - MI4 -
Cooling System Draining, Filling and
Bleeding

S-MAX/Galaxy 2006.5 (02/2006-)

Print

General Procedures

Draining

WARNING: When releasing the cooling system pressure, cover the coolant expansion

tank cap with a thick cloth.

Filling and Bleeding

CAUTION: The fluid level must remain between the MAX and MIN marks.

1. Release the cooling system pressure by slowly

turning the coolant expansion tank cap between
2 and 3 turns.

2.

3. Refer to:

Lifting

(100-02 Jacking and Lifting,

Description and Operation).

4.

5.

6. Install the radiator drain plug.

7. Lower the vehicle.

1. Switch the interior heater blower off.

2. Fill the coolant expansion tank coolant level to

the neck of the coolant expansion tank.

3. Start the engine.

4. Raise the engine speed to 2500 RPM and

maintain it for 1 minute.

5. Check the coolant expansion tank coolant level.

6. If the coolant expansion tank coolant level has

fallen below the MIN mark, stop the engine and
refill the coolant expansion tank level to the neck
of the coolant expansion tank.

7. Install the coolant expansion tank cap.

8. Start the engine if stopped.

9. Raise the engine speed to 2500 RPM and

maintain it for approximately 11 minutes while
observing the coolant expansion tank coolant
level.

10. Maintain the engine speed at 2500 RPM for a

further 3 minutes.

11. Increase the engine speed to 4000 RPM and

maintain it for 5 seconds.

12. Decrease the engine speed to 2500 RPM and

maintain it for 3 minutes.

13. Switch the engine off.

14. Check the cooling system for leaks.

15. Check the coolant expansion tank coolant level.

16. Refer to:

Lifting

(100-02 Jacking and Lifting,

Description and Operation).

17.

18. Lower the vehicle.

19. Allow the engine to cool.

20. Fill the coolant expansion tank coolant level to

the MAX mark.