Engine Cooling - 2.OL Duratec-HE (M14)
DIAGNOSIS AND TESTING
Symptom Possible Sources Action
Coolant
pump.
Thermostat housing.
Coolant expansion tank cap or
seal(s).
- -
Coolant expansion tank.
Heater core.
Engine. INSPECT the
coolant pump
leaks. CARRY OUT the Pres-
sure Test Component Test in
this section. INSTALL a new
gasket as necessary.
REFER to: Coolant Pump (303-
03 Engine Cooling
- 2.OL
Duratec-HE (M14), Removal
and Installation).
INSPECT the thermostat
housing for leaks. CARRY OUT
the Pressure Test Component
Test in this section. INSTALL
a new thermostat housing and
thermostat housing gasket as
necessary.
REFER to: Thermostat Housing
(303-03 Engine Cooling
-
2.OL Duratec-HE (M14),
Removal and Installation).
CHECK the coolant expansion
tank cap for tightness and
damage. INSTALL a new
coolant expansion cap as
necessary.
INSPECT the coolant expan-
sion 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
- 1.3L Duratec-8V
(Rocam), In-vehicle Repair).
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303-03B-11 Engine Cooling - 2.OL Duratec-HE (M14) 303-03B-1 I
DIAGNOSIS AND TESTING
Symptom
The engine overheats (signs of
coolant boiling)
Possible Sources Action
Cooling system does not hold
pressure. INSPECT
the coolant expan-
sion tank for damage. INSTALL
a new coolant expansion tank
as necessary. INSPECT the coolant pump or
coolant pump gasket for
damage. INSTALL a new
coolant pump or coolant pump
gasket as necessary.
REFER to: Coolant Pump (303-
03 Engine Cooling
- 2.OL
Duratec-HE (M14), Removal
and Installation).
INSPECT the engine, cylinder
head, cylinder block and
cylinder head gasket.
REFER to: Cylinder Head (303-
01 Engine - 1.3L Duratec-8V
(Rocam), In-vehicle Repair). -
Air in cooling system. BLEED the cooling system.
REFER to: Cooling System
Draining, Filling and Bleeding
(303-03 Engine Cooling
-
2.OL Duratec-HE (M14),
General Procedures).
Coolant expansion tank cap or
seal(s).
CHECK the coolant expansion
tank cap for tightness and damage. INSTALL a new
coolant expansion cap as
necessary.
Coolant expansion tank. INSPECT
the coolant expan-
sion tank for damage. INSTALL
a new coolant expansion tank
as necessary.
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Engine Cooling - 2.OL Duratec-HE (M14)
DIAGNOSIS AND TESTING
Symptom Possible Sources
Action
I Accessory drive belt. CHECK the condition of the
accessory drive belt.
REFER to: Accessory Drive
(303-05 Accessory Drive,
Diagnosis and Testing).
Cooling fan.
CHECK the operation of the
I cooling fan. REFER to WDS.
Engine. INSPECT the engine, cylinder
head, cylinder block and
cylinder head gasket.
REFER to: Cylinder Head
(303-
01 Engine - I .3L Duratec-8V
(Rocam), I n-vehicle Repair).
The engine does not reach
normal operating temperature. CHECK the ECT sensor.
I REFER to WDS.
Temperature gauge. CHECK the instrument cluster
engine temperature gauge.
REFER to: lnstrument Cluster
- Vehicles Built Up To:
1012005 (41 3-01 lnstrument
Cluster, Diagnosis and
Testing)
I lnstrument Cluster - Vehicles
Built From:
1012005 (41 3-01
lnstrument Cluster, Removal
and Installation).
Thermostat. CARRY OUT the Thermostat
Test Component Test in this
section. INSTALL a new ther-
mostat housing and thermostat
housing gasket as necessary.
REFER to: Thermostat Housing (303-03 Engine Cooling
-
2.OL Duratec-HE (M14),
Removal and Installation).
Component Tests
Pressure Test
A WARNING:When releasing the cooling
system pressure, cover the coolant
expansion tank cap with a thick cloth to
- prevent the possibility of coolant scalding.
Failure to follow this instruction may result
in personal injury.
N0TE:lf the coolant expansion tank cap is rotated
counterclockwise by 1 12 a full turn, the pressurized
coolant will be vented to the underside of the
coolant expansion tank cap.
1. Remove the coolant expansion tank cap.
2. Install the special tools 303-396 and 303-396-01
to the coolant expansion tank.
3. Pressurize the system to the coolant expansion
tank cap release pressure.
REFER to: Specifications (303-03 Engine
Cooling
- 2.OL Duratec-HE (M14),
Specifications).
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303-03B-14 Engine Cooling - 2.OL Duratec-HE (M14) 303-03B-14
DIAGNOSIS AND TESTING
4. Observe the cooling system pressure tester make sure the pressure test reading
is
gauge reading for approximately two minutes. repeatable
and within acceptable gauge reading
The pressure should not drop during this time. limits of
the coolant expansion tank cap.
( If the system holds Pressure, proceed to Step 5. If the pressure test gauge readings are not 7. If the system does not hold pressure, check
within the acceptable gauge reading limits,
it thoroughly for coolant leaks.
INSTALL a new coolant expansion tank cap.
5. Check the engine for coolant leaks. Drain the
cooling system, repair any coolant leaks found
and fill and bleed the cooling system as
Thermostat Test
necessaw.
REFER to: Cooling System Draining, Filling and
Bleeding (303-03 Engine Cooling
- 2.OL
Duratec-HE (M14), General Procedures).
.Recheck the system by repeating Steps 3 and
4 at least twice.
Radiator Leak Test, Removed From Vehicle
CAUTI0N:Radiator internal pressure must
not exceed
130 kpa (20 psi) or damage may
result.
Clean the radiator thoroughly before leak testing
it, to prevent contamination of the water in the test
tank. Leak test the radiator in clean water with 138
kpa (20 psi) air pressure. Check it thoroughly for
air leaks. INSTALL a new radiator if necessary.
REFER to: Radiator (303-03 Engine Cooling
- 2.OL
Duratec-HE (M14), Removal and Installation).
Coolant Expansion Tank Cap Pressure Test
A WARNING:When releasing the system
pressure, cover the expansion tank cap
with a thick cloth to prevent the possibility
of coolant scalding, Failure to follow this
instruction may result in personal injury.
1. Remove the coolant expansion tank cap.
2. Use water to clean the area of the rubber seal
and pressure relief valve. Install the pressure
tester and adapter and immerse the coolant
-
expansion tank cap in water.
N0TE:lf the plunger of the pump is depressed too
quickly, an erroneous pressure reading will result.
3. Slowly depress the plunger of the pressure test
pump until the pressure gauge reading stops
increasing, and note the highest pressure
reading obtained.
4. Release pressure by turning the pressure relief
screw counterclockwise. Tighten the pressure
relief screw and repeat step 3 at least twice to
I. Connect the WDS to the data link connector
(DLC).
2. Using the WDS datalogger function, SELECT
the following sensors (as applicable to the
application):
IAT
- intake air temperature (IAT) sensor
ECT
- engine coolant temperature (ECT) sensor
CHT
- cylinder head temperature (CHT) sensor
LOAD
- engine load
VSS
- vehicle speed sensor (VSS)
RPM
- engine speed
DSRPM
- desired engine speed
The IAT sensor output is useful if the engine being
tested is cold or after an over-night cold soak. The
ECT sensor or CHT sensor and the IAT sensor
(
should either indicate the same value or be within
1 to 2 degrees Celsius of each other.
The ECT sensor output is important to display as
it indicates the engine warm-up and opening
temperature for the thermostat. It will initially
indicate a slightly higher reading just before the
thermostat opens and then drops back before
settling to a near flat line output (see graphic
below).
Item Description 1'. .
) A 1 Thermostat opens I\
B Thermostat settles into a cyclic open and
I I closure pattern
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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.
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303-03B-27 Engine Cooling - 2.OL Duratec-HE (M14) 303-03B-27
REMOVAL AND INSTALLATION
I. Remove the radiator retainer locking screws.
2. Remove the radiator retainers and grommets.
9. Detach the radiator and the air conditioning
(NC) condenser from the support panel.
Om ACAUTION:S~~~~~~ the AIC condenser
by positioning it on the support panel.
Slide the
NC condenser to detach it from the
radiator
, 11. Remove the radiator. I
Installation
I. To install, reverse the removal procedure.
2006.0 Fiesta 1212006 G457934en
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Fuel Charging and Controls - 1.25L
Duratec-1 6V (Sigma)ll.4L Duratec-1 6V
303-04A-3 (Sigma)ll .6L Duratec-1 6V (Sigma) 303-04A-3 - -
DIAGNOSIS AND TESTING
Fuel Charging and Controls
Principles Of Operation
REFER to: Acceleration Control (31 0-02A,
Diagnosis and Testing).
lnspection and Verification
1. Verify the customer concern.
2. Visually inspect for obvious signs of mechanical
or electrical damage.
Visual Inspection Chart
I Mechanical I Electrical I
- Fuel leak(s)
- Blocked or contamin-
ated fuel filter
- Fuel rail
- Vacuum line(s)
- Throttle body
- Wiring harness
- Electrical
connector(s)
- Fuel injector(s)
- Throttle body
I
3. If an obvious cause for an observed or reported
concern is found, correct the cause (if possible)
before proceeding to the next step.
4. If the cause is not visually evident, verify the
symptom and refer to WDS.
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Fuel Charging and Controls - 1.25L
Duratec-1 6V (Sigma)llI4L Duratec-1 6V
(Sigma)llI6L Duratec-1 6V (Sigma)
REMOVAL AND INSTALLATION
Fuel Charging Wiring Harness(36 437 0)
Removal
1. Remove the air cleaner. For additional
5. N0TE:lt is necessary to lift the red locking
tab before the electrical connector can be
disconnected.
information, refer to Section
303-12 [Intake the throttle body electrical Air Distribution and Filtering].
connector.
2. Disconnect the spark plug wires from the
ignition coil.
6. Disconnect the fuel charging wiring harness
electrical connector.
3. Disconnect the engine coolant temperature
(ECT) sensor electrical connector.
(
7. Remove the positive crankcase ventilation
(PCV) hose.
4. Disconnect the camshaft position (CMP)
sensor electrical connector.
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