Page 763 of 1226

Engine Cooling - 1.3L Duratec-8V
(Rocam)ll.25L Duratec-1 6V (Sigma)ll.4L
303-03A-21 Duratec-1 6V (Sigma)/l .6L Duratec-1 6V (Sigma) 303-03A-21
REMOVAL AND INSTALLATION
Water Pump - 1.25L Duratec-1 6V (Sigma)/l.4L Duratec-1 6V
(Sigma)/l .6L Duratec-1 6V (Sigma)(24 404 0)
Removal
Vehicles built up to 0412005
Loosen the water pump pulley retaining
bolts.
1. Disconnect the battery ground cable.
For additional information, refer to: Battery
Disconnect
(414-01 Battery, Mounting and
Cables, General Procedures).
2. Remove the air
cleaner.
For additional information, refer to: Air
Cleaner - 1.25L Duratec-1 6V (Sigma)ll.4L
Duratec-1 6V (Sigma)ll .6L Duratec-1 6V
(Sigma) (303-12 Intake Air Distribution and
Filtering, Removal and Installation).
3. Drain the cooling system.
6. Lower the vehicle. For additional information, refer to: Cooling
System Draining, Filling and Bleeding - 1.3~ 7. Disconnect the degas hose from the coolant
Duratec-8V (Rocam)ll.25L Duratec-1 6V expansion tank.
(Sigma)ll.4L Duratec-1 6V (Sigma)ll .6L
Duratec-1 6V (Sigma) (303-03 Engine
Cooling - 1.3L DuratecdV (Rocam)ll.25L
Duratec-1 6V (Sigma)ll.4L Duratec-1 6V
(Sigma)ll .6L Duratec-1 6V (Sigma), General
Procedures).
4. Remove the crankshaft
pulley splash shield.
5m AWARNING:D~ not remove the water pump
pulley retaining bolts at this stage as the
pulley is under tension from the accessory
drive
belt. Failure to follow this instruction
may
result in personal injury. 8.
Detach the
coolant expansion tank and
secure
it to one side.
2006.0 Fiesta 1212006 GI 89080en
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Page 764 of 1226

Engine Cooling - 1.3L Duratec-8V
(Rocam)ll.25L Duratec-1 6V (Sigma)llI4L
303-03A-22 Duratec-1 6V (Sigma)lIl6L Duratec-1 6V (Sigma) 303-03A-22
REMOVAL AND INSTALLATION
9. Remove the generator.
For
additional information, refer to:
Generator
- 1.25L Duratec-1 6V (Sigma)/l.4L
Duratec-I 6V (Sigma)/l .6L Duratec-I 6V
(Sigma)
(414-02 Generator and Regulator,
Removal and Installation).
10. Remove the water pump pulley.
Discard the gasket.
Vehicles built 0412005 onwards
13. Remove the timing belt.
For additional information, refer to: Timing
Belt (303-01 Engine - 1.25L Duratec-1 6V
(Sigma)ll.4L Duratec-1 6V (Sigma)ll .6L
Duratec-1 6V (Sigma), ln-vehicle Repair).
11. Remove the timing belt cover (cover shown 14. Drain the cooling system,
removed for clarity). For additional information, refer to: Cooling
12' &AUTION:P~~~~~~ the timing belt and
lower cover from contamination by the
coolant.
Remove the water pump. System
Draining,
Filling and Bleeding -
1.3L Duratec-8V (Rocam)ll.25L
Duratec-1 6V (Sigma)ll.4L Duratec-1 6V (,
(Sigma)ll .6L Duratec-1 6V (Sigma) (303-03
Engine
Cooling - 1.3L Duratec-8V
(Rocam)ll.25L Duratec-I 6V (Sigma)/l.4L
Duratec-1 6V (Sigma)ll .6L Duratec-1 6V
(Sigma), General Procedures).
15. Remove the water pump and the timing
belt
tensioner.
Discard the gasket.
2006.0 Fiesta 1212006 GI 89080en
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Page 785 of 1226

303-03B-15 Engine Cooling - 2.OL Duratec-HE (M14) 303-03B-15
DIAGNOSIS AND TESTING
A CAUTI0N:lf the ECT sensor output reaches
the
120°C default line under normal cooling
system pressure, internal damage may be
caused to the engine and a diagnostic
trouble code (DTC) will be set in the PCM.
The test should be stopped and the cause
located and corrected. If the cooling
system does not pressurize, the coolant
will boil at
1 OO°C which may also damage
the engine. CARRY
OUT the Coolant
Expansion Tank Cap Pressure Test
Component Test in this section.
If the WDS only allows the ECT sensor to be
displayed in volts, refer to the following table for
corresponding Celsius values:
The CHT sensor output is useful to examine the
cylinder head temperature rise during the warm-up
cycle and later during the normal light throttle cruise
test. This sensor output may vary between vehicles
with manual transmission and vehicles with automatic transmission and should be used for
reference only.
Volts
1.33
1.02
0.78
0.60
0.46
0.35 0.27
The LOAD display is used for reference as it is
necessary to maintain a stable load line during the
test. It is necessary to carry out the test under
normal light throttle cruise driving conditions and
average loads, typically 40% to 70% of the load
value.
OCelsius
60
70
80
90
100
110
120 '
The VSS output is used for reference but can help
to identify misfires and sensors which fail during
the warm-up cycle.
The RPM display indicates the engine speed and
can be compared with the DSRPM.
The DSRPM is the desired or calculated idle speed
which the PCM commands the engine to reach. If
the thermostat opens too early (before the correct
opening temperature has been reached), the
engine will not reach this value. When
using the WDS in data logger mode, the
signals recorded should remain within the
DEFAULT values set by the WDS.
3m AWARNING:M~~~ sure that the WDS is
placed in the vehicle so that it does not
interfere with the safe operation of the
vehicle. Do not place the WDS in the
deployment path of any air bag. Failure to
follow these instructions may result in personal injury.
N0TE:The road test is best carried out with the
aid of another technician in the vehicle to enable
the vehicle to be driven safely while the sensor
outputs are monitored within datalogger. If there
is only one technician available, the WDS can be
set up (using the
recordlcapture mode camera
icon) before leaving the workshop to record a 16
km (1 0 mile) test.
N0TE:The results from the test are more
conclusive if the engine is cold when the test is
started.
Carry out a road test.
REFER to:
RoadIRoller Testing (1 00-00 General
Information, Description and Operation).
4. Drive the vehicle at a constant throttle opening
and set speed until the ECT value settles into
a shallow rise and fall signal, close to a straight
line. This indicates that the thermostat is
functioning correctly.
N0TE: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 (1
02OC) 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.
2006.0 Fiesta 1212006 G426582en
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Page 787 of 1226

303-03B-17 Engine Cooling - 2.OL Duratec-HE (M14) 303=03B-17 --
GENERAL PROCEDURES
Cooling System Draining, Filling and Bleeding(24 122 0)
Draining
, Special Tool(s) Allow the coolant to drain into a suitable
Im AWARNING:~~~~ releasing the cooling
system pressure, cover the coolant
expansion tank cap with a thick cloth to
prevent the possibility of scalding. Failure
5. Install the radiator lower hose.
to follow this instruction may result in
personal injury.
6. Lower the vehicle.
Release the cooling system pressure by
slowly turning the coolant expansion tank
Filling and Bleeding
cap a quarter of a turn. 1. Fill the coolant expansion tank to the MAX
mark.
container.
24003
2. Remove the coolant expansion tank cap.
3. Raise and support the vehicle.
For additional information, refer to: Lifting
(1 00-02 Jacking and Lifting, Description
and Operation).
4. Using the special tool, disconnect the
radiator lower hose to drain the cooling
system.
Removerllnstaller, Cooling
Hose Clamp
303-397 (24-003)
2. N0TE:Do not allow the engine to reach
normal operating temperature.
Start the engine, run the engine briefly at
2500 revolutions per minute (RPM) for 10
seconds to prime the heater circuit.
3. Switch the engine off.
4. Fill the coolant expansion tank 15 mm over
the MAX mark.
5. Install the coolant expansion tank cap.
6. Start the engine, maintain the engine speed
at
2500 RPM for eight minutes or until the
engine reaches normal operating
temperature.
2006.0 Fiesta 1212006
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Page 789 of 1226
303-03B-19 Engine Cooling - 2.OL Duratec-HE (M14) 303-03B-19
REMOVAL AND INSTALLATION
Coolant Pump(24 404 0)
1. Drain the cooling system. 3.
Loosen the coolant pump pulley retaining bolts. - - - - - - -
For additional information, refer to: Cooling -
System Draining, Filling and Bleeding
(303-03 Engine Cooling - 2.OL Duratec-HE
(M14), General Procedures).
2. Remove the crankshaft pulley splash shield.
4. Remove the accessory drive belt.
For additional information, refer to:
Accessory Drive Belt
- 2.OL Duratec-HE
(M 14) (303-05 Accessory Drive, Removal
and Installation).
5. Remove the components in the order
indicated in the following
illustration(s) and
table(s).
2006.0 Fiesta 1212006 G421227en
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Page 791 of 1226
303-03B-21 Engine Cooling - 2.OL Duratec-HE (M14) 303-03B-21
REMOVAL AND INSTALLATION
Thermostat Housing
Special Tool(s) 2. Lower the vehicle.
I Remover/lnstaller, Coolant 1 3. Remove the right-hand headlamp assembly.
1. Drain the cooling system.
I
For additional information, refer to: Cooling
System Draining, Filling and Bleeding
(303-03 Engine Cooling
- 2.OL Duratec-HE
(M14), General Procedures).
Hose Clamp
303-397 For additional information, refer to:
Headlamp Assembly (41 7-01 Exterior
Lighting, Removal and Installation).
4. Remove the components in the order
indicated in the following
illustration(s) and
table(s).
2006.0 Fiesta 1212006 G426583en
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Page 794 of 1226
303-03B-24 Engine Cooling - 2.OL Duratec-HE (M14) 303-03B-24
REMOVAL AND INSTALLATION
Coolant Outlet Connector
Removal
1. Remove the air cleaner.
For additional information, refer to: Air
Cleaner
- 2.OL Duratec-HE (M14) (303-12
Intake Air Distribution and Filtering,
Removal and Installation).
2. Disconnect the spark plug wires from the
ignition coil pack.
4. Remove the ignition coil pack.
5. Drain the cooling system.
For additional information, refer to: Cooling
System Draining, Filling and Bleeding
(303-03 Engine Cooling
- 2.OL Duratec-HE
(M14), General Procedures).
6. Disconnect the engine coolant temperature
3. Disconnect the ignition coil pack electrical
(ECT) sensor electrical connector.
connector.
2006.0 Fiesta 1212006 G421228en
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Page 796 of 1226

303-03B-26 Engine Cooling - 2.OL Duratec-HE (M14) 303-03B-26
REMOVAL AND INSTALLATION
Removal 2. Push the cooling fan motor and shroud l.
upwards and then downwards to remove.
1. Disconnect the battery ground cable. I
For additional information, refer to: Battery
Disconnect
(414-01 Battery, Mounting and
Cables, General Procedures).
2. Drain the cooling system.
For additional information, refer to: Cooling
System Draining, Filling and Bleeding
(303-03 Engine Cooling - 2.OL Duratec-HE
(M14), General Procedures).
3. Disconnect the cooling fan motor and
cooling fan resistor electrical connectors.
4. Remove
the air cleaner intake pipe resonator.
5. Remove the cooling fan motor and shroud.
1. Release the cooling fan motor and shroud
from the retaining brackets.
6. Disconnect the radiator upper hose.
1. Pull out the quick release spring clip.
2. Pull the radiator upper hose from the quick
release connector.
7. Disconnect the radiator degas hose from the
radiator.
Release the locking tangs.
8. Remove the radiator retainers.
2006.0 Fiesta 1212006 G457934en
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