Ford Galaxy / Ford S-MAX. Manual — part 341

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

(303-03D Engine Cooling - 1.8L Duratorq-TDCi

(74kW/100PS) - Lynx/1.8L Duratorq-TDCi (92kW/125PS) - Lynx, 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)

or electrically erasable programmable read only memory (EEPROM) so that new
drive values can be learnt.

Item

A

B

Part Number

-

-

Engine Cooling - 1.8L Duratorq-TDCi
(74kW/100PS) - Lynx/1.8L Duratorq-
TDCi (92kW/125PS) - Lynx - 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.

1. Release the cooling system pressure by slowly

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

2.

3. Raise and support the vehicle.

Refer to:

Lifting

(100-02 Jacking and Lifting,

Description and Operation).

4.

5.

6.

Filling and Bleeding

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

7. Install the radiator drain plug.

8. Lower the vehicle.

1. Switch the interior heater blower off.

2. Fill the coolant expansion tank coolant level to

the top of the neck.

3. Install the coolant expansion tank cap.

4. Start the engine.

5. Raise the engine speed to 2000 revolutions per

minute (RPM) and maintain it for 3 minute.

6. Monitor the coolant level for approximately 3

minutes.

7. Switch the engine off.

8. Check the coolant level.

9. Fill the coolant expansion tank coolant level to

the neck of the tank if necessary.

10. Install the coolant expansion tank cap.

11. Start the engine.

12. Raise the engine speed to 2000 RPM.

13. Maintain the engine speed at 2000 RPM for

approximately 13 minutes until the engine has
reached normal operating temperature.

14. Increase the engine speed to 3000 RPM and

maintain it for 5 seconds.

15. Decrease the engine speed to 2000 RPM and

maintain it for 15 minutes.

16. Switch the engine off.

17. Check the cooling system for leaks.

18. Raise and support the vehicle.

Refer to:

Lifting

(100-02 Jacking and Lifting,

Description and Operation).

19.

20.

21. Lower the vehicle.

22. Allow the engine to cool.

23. Fill the coolant expansion tank coolant level to

the MAX mark.