Page 745 of 1226
Engine Cooling - 1.3L Duratec-8V
(Rocam)ll.25L Duratec-1 6V (Sigma)ll.4L
Duratec-1 6V (Sigma)ll.GL Duratec-1 6V (Sigma)
SPECIFICATIONS
2006.0 Fiesta 1212006 GI 46257en
Description
Thermostat housing retaining bolts
Nm
10
I b-ft
-
Ib-in
89
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Page 746 of 1226
Engine Cooling - 1.3L Duratec-8V
(Rocam)ll.25L Duratec-1 6V (Sigma)ll.4L
Duratec-1 6V (Sigma)/l .6L Duratec-1 6V (Sigma)
DESCRIPTION AND OPERATION
Engine Cooling - 1.4L Duratec-I 6V (Sigma)/l .6L Duratec-1 6V
(Sigma)
Overview
2006.0 Fiesta 1212006 GI 79022en
Description Item Description
I "
(
4
5
6
7
Heater heat exchanger
Thermostat housing
Coolant expansion tank Radiator
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Page 747 of 1226
Engine Cooling - I .3L DuratecdV
(Rocam)ll.25L Duratec-1 6V (Sigma)ll.4L
Duratec-1 6V (Sigma)ll .6L Duratec-1 6V (Sigma)
DESCRIPTION AND OPERATION
Components
Coolant pump
The coolant pump is secured to the engine block
at the timing gear end.
Item Description It is driven through a pulley b; the accessory drive
2006.0 Fiesta 1212006 GI 79022en
belt.
The gasket for the coolant pump must not be
reused. 1
2
I
Coolant pump
Coolant pump gasket
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Page 748 of 1226
Engine Cooling - I .3L Duratec-8V
(Rocam)ll.25L Duratec-1 6V (Sigma)ll.4L
303-03A-6 Duratec-I 6V (Sigma)/l .6L Duratec-I 6V (Sigma) 303-03A-6
DESCRIPTION AND OPERATION
Thermostat and thermostat housing
Item Description The thermostat and thermostat housing are located
- - -- - -- - -- --
2006.0 Fiesta 1212006 GI 79022en
I 1 I Thermostat housing
2
3
on the side of the engine block.
Thermostat
Venting pin When
installing the thermostat, make sure that the
venting pin is at the top.
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Page 749 of 1226
Enaine Cooling - 1.3L Duratec-8V
(~ocah)ll.25L ~Cratec-1 6~ (Sigma)ll.4L
303-03A-7 Duratec-1 6V (Sigma)ll .6L Duratec-1 6V (Sigma) 303-03A-7
DESCRIPTION AND OPERATION
Water outlet housing
Coolant Temperature (ECT)
sensor
Item Description
The water outlet housing is located on the cylinder
head nearest the transmission.
1
2
Among other things, it is used to mount the
Electronic Ignition (El) coil.
Gasket
Water outlet housing
In addition, the ECT sensor is located in the
housing.
2006.0 Fiesta 1212006 GI 79022en
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Page 750 of 1226

Engine Cooling - 1.3L Duratec-8V
(Rocam)ll.25L Duratec-1 6V (Sigma)ll.4L
303-03A-8 Duratec-1 6V (Sigma)/l .6L Duratec-1 6V (Sigma) 303-03A-8
DIAGNOSIS AND TESTING
Engine Cooling
Special Tool(~)
Pressure Tester,
Cooling
System
303-396 (24-001 A)
General
Equipment
I Worldwide Diagnostic System (WDS) I
Visual Inspection Chart i,
I Mechanical I Electrical I
- Coolant leak(s)
- Coolant level
- Air in system
- Gasketslseals
- Hose(s)lhose joints
- Coolant expansion
tank cap and
seal
- Coolant expansion
tank
- Radiator
- Water pump
- Thermostat
- Thermostat housing
- Accessory drive belt
- Fuse(s)
- Relay(s)
- Wiring harness
- Electrical
connector(s)
- Cooling fan motor
- Engine coolant
temperature (ECT)
sensor
- Cylinder head
temperature (CHT) sensor
- Powertrain control
module (PCM)
3.
If an obvious cause for an observed or reported Inspection and Verification concern is found, correct the cause (if possible)
before proceeding to the next step.
1. Verify the customer concern.
4.
If the cause is not visually evident, verify the ( 2. Visually inspect for obvious signs of mechanical
symptom and refer to the Symptom Chart.
or
electrical damage.
Symptom Chart
Symptom Chart
Svm
ptom Possible Sources Action
Loss of
coolant INSPECT the hoses and hose
joints. INSTALL a new
hose(s)
as necessary.
Radiator. INSPECT the radiator for leaks.
CARRY OUT the Pressure Test
Component Test in this section.
INSTALL a new radiator as
necessary.
REFER to: Radiator (303-03 Engine
Cooling - 1.3L
Duratec-8V (Rocam)/l.25L
Duratec-1 6V (Sigma)1ln4L
Duratec-1 6V (Sigma)ll .6L
Duratec-I 6V (Sigma),
Removal and Installation).
2006.0 Fiesta 1212006 GI 46258en
procarmanuals.com
Page 751 of 1226

Engine Cooling - 1.3L Duratec-8V
(Rocam)ll.25L Duratec-I 6V (Sigma)ll.4L
303-03A-9 Duratec-1 6V (Sigma)/l .6L Duratec-1 6V (Sigma) 303-03A-9
DIAGNOSIS AND TESTING
Symptom Possible Sources Action
2006.0 Fiesta 1212006 Gl46258en
Water pump.
Thermostat housing. INSPECT
the water pump for
leaks. CARRY OUT the Pres-
sure Test Component Test in
this section. INSTALL a new
water pump or water pump
gasket as necessary.
REFER to: Water Pump
- I .3L
Duratec-8V
(Rocam) (303-03
Engine Cooling
- 1.3L
Duratec-8V (Rocam)/l.25L
Duratec-1 6V (Sigma)ll.4L
Duratec-1 6V (Sigma)/l .6L
Duratec-1 6V (Sigma),
Removal and Installation)
I Water Pump - 1.25L Duratec-
16V (Sigma)/l.4L Duratec-
16V (Sigma)/l .6L Duratec-
16V (Sigma) (303-03 Engine
Cooling
- 1.3L Duratec-8V
(Rocam)/l.25L Duratec-1 6V
(Sigma)ll.4L Duratec-1 6V
(Sigma)ll .6L Duratec-1 6V
(Sigma), Removal and
Installation).
INSPECT the thermostat
housing for leaks. CARRY OUT
the Pressure Test Component
Test in this section. INSTALL
a new thermostat housing or
thermostat housing gasket as
necessary.
REFER to: Thermostat
- 1.3L
Duratec-8V (Rocam) (303-03
Engine Cooling
- I .3L
Duratec-8V (Rocam)/l.25L
Duratec-16V (Sigma)/l.4L
Duratec-16V (Sigma)/l .6L
Duratec-16V (Sigma),
Removal and Installation)
/ Thermostat - 1.25L Duratec-
16V (Sigma)ll.4L Duratec-
16V (Sigma)/l .6L Duratec-
16V (Sigma) (303-03 Engine
Cooling
- 1.3L Duratec-8V
(Rocam)/l.25L Duratec-1 6V
(Sigma)/l.4L Duratec-1 6V
(Sigma)/l .6L Duratec-1 6V
(Sigma), Removal and
Installation).
procarmanuals.com
Page 752 of 1226
Engine Cooling - 1.3L Duratec-8V
(Rocam)llI25L Duratec-1 6V (Sigma)ll.4L
Duratec-1 6V (Sigma)/l .6L Duratec-1 6V (Sigma)
DIAGNOSIS AND TESTING
Symptom
Possible Sources Action
Coolant expansion tank cap or
seal.
Coolant expansion tank.
Heater core.
Engine. CHECK
the
coolant expansion
tank cap for tightness. If OK,
I
CARRY OUT the Coolant
Expansion Tank Cap Pressure
Test Component Test in this
section.
INSPECT the seal face on the
coolant expansion tank for
damage. INSTALL a new
coolant expansion tank as
necessary.
CHECK the heater core for
leaks.
INSPECT the engine, cylinder
head, cylinder block and
cylinder head gasket.
REFER to:
Cylinder Head (303-
01 Engine
- I .25L Duratec-
16V
(Sigma)/l.4L Duratec-
16V
(Sigma)/l .6L Duratec-
16V (Sigma),
In-vehicle
Repair).
2006.0 Fiesta 1212006 GI 46258en
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