Page 560 of 1226
Engine - 1.25L Duratec-1 6V (Sigma)llm4L
Duratec-I 6V (Sigma)ll .6L Duratec-1 6V (Sigma)
REMOVAL
13. Disconnect the low pressure evaporate 16. Using the special tool, disconnect the
emission
(EVAP) hose from the EVAP valve. coolant hose from the coolant distribution
housing.
14. Detach the brake booster vacuum line from
the intake manifold.
17. Disconnect the heated oxygen (HOZS)
sensor electrical connector.
15. Using the special tool, disconnect the
coolant hose from the coolant distribution
18. Disconnect the catalyst monitor sensor
housing. electrical connector.
2006.0 Fiesta 1212006 G380458en
procarmanuals.com
Page 561 of 1226
Engine - 1.25L Duratec-1 6V (Sigma)llm4L
Duratec-1 6V (Sigma)/l.6L Duratec-I 6V (Sigma)
REMOVAL
19. Disconnect the power steering pressure 22.
Disconnect the engine wiring harness
(PSP) switch electrical connector. electrical
connector.
I
20. Detach the power steering line support 23. Disconnect
the EVAP electrical connector.
bracket from the cylinder head.
24. Disconnect the knock sensor (KS) electrical
21. Detach the power steering line from the connector.
power steering pump mounting bracket.
2006.0 Fiesta 121200'6 G380458en
procarmanuals.com
Page 562 of 1226
Engine - 1.25L Duratec-1 6V (Sigma)lIl4L
303-01 A-86 Duratec-1 6V (Sigma)/l .6L Duratec-1 6V (Sigma)
303-01 A-86
REMOVAL
25. Disconnect the generator electrical
connectors. 29. Detach the engine ground cable from the
transaxle.
J
26. Remove the right-hand headlamp assembly.
30. Remove the engine wiring harness support
For additional information, refer to: brackets.
Headlamp Assembly
(41 7-01 Exterior
Lighting, Removal and Installation).
27. Disconnect the engine coolant temperature
(ECT) electrical connector.
28. Disconnect the electronic ignition (El) coil
electrical connector. 31.
Disconnect the turbine shaft speed (TSS)
sensor electrical connector.
2006.0 Fiesta 1212006 G380458en
procarmanuals.com
Page 563 of 1226
Engine - 1.25L Duratec-1 6V (Sigma)ll.4L
Duratec-1 6V (Sigma)ll .6L Duratec-1 6V (Sigma) - ---
REMOVAL
32. Detach the ground cable from the transaxle. 35.
Disconnect the transmission range (TR)
sensor electrical connector.
33. Disconnect the transaxle breather hose.
36. Detach the selector lever cable from the
transaxle.
34. Disconnect the transaxle wiring harness
electrical connector.
37. Detach the selector lever retaining bracket
from the transaxle.
2006.0 Fiesta 1212006 G380458en
procarmanuals.com
Page 564 of 1226

Engine - 1.25L Duratec-1 6V (Sigma)llI4L
303-01 Am88 Duratec-1 6V (Sigma)/l .6L Duratec-1 6V (Sigma) 303101 A-88
REMOVAL
38. Disconnect the vehicle speed (VSS) sensor
40. Disconnect the oil pressure switch
electrical connector. electrical connector.
/
39. N0TE:Mark the position of the transmission
fluid cooler supply line and the
transmission fluid cooler return line.
Disconnect the transmission fluid cooler
lines from the transaxle.
For additional information, refer to: Health
and Safety Precautions
(1 00-00 General
Information, Description and Operation).
See
- Transmission Fluids.
Allow the fluid to drain into a suitable
container.
For additional information, refer to: Health and Safety Precautions
(1 00-00 General
Information, Description and Operation).
See
- Transmission Fluids.
41. Raise and support the vehicle.
For additional information, refer to: Lifting
(1 00-02 Jacking and Lifting, Description
and Operation).
42. Disconnect the crankshaft position (CKP)
sensor electrical connector.
43. Disconnect the ignition switch to starter
motor solenoid and battery to starter motor
solenoid cables.
2006.0 Fiesta la2006 G380458en
procarmanuals.com
Page 577 of 1226
Engine - 1.25L Duratec-1 6V (Sigma)llI4L
Duratec-1 6V (Sigma)lI.GL Duratec-1 6V (Sigma) 303-01A-101
DISASSEMBLY
32. Remove the crankshaft timing belt pulley. 35. Disconnect the positive crankcase
ventilation (PCV) hose from the PCV cover.
33. Remove the timing belt rear cover.
34m ACAUTION: ~ee~ the camshaft bearing
caps and the camshafts in order for
installation.
36. Detach the oil level indicator and tube from
the intake manifold.
Detach the knock sensor (KS) electrical
connector from the oil level indicator tube.
Remove the camshafts. 37. Remove the intake manifold lower bolt.
Slacken each camshaft bearing cap retaining
bolt in the sequence shown by one turn until
the camshaft is released.
Remove the camshaft bearing caps.
Remove and discard the camshaft seals.
38.
CAUTIONS:
A~~ace the cylinder head on a suitable
soft surface.
A~emove the cylinder head bolts in the
sequence shown.
2006.0 Fiesta 1212006 G 1 54224en
procarmanuals.com
Page 580 of 1226
Engine - 1.25L Duratec-1 6V (Sigma)llm4L
303-01 A-I 04
Duratec-1 6V (Sigma)ll .6L Duratec-1 6V (Sigma) 303-01 A-I 04
DISASSEMBLY
All vehicles Remove the special tools.
50. Remove the crankshaft position (CKP)
sensor.
51. Remove the CKP sensor bracket.
52. Remove the crankshaft rear seal carrier.
Discard the crankshaft rear seal carrier.
53. Detach the cylinder block (short block) from
the mounting stand.
2006.0 Fiesta 1212006 GI 54224en
procarmanuals.com
Page 581 of 1226
Engine - 1.25L Duratec-1 6V (Sigma)ll.4L
303-01 A-1 05 Duratec-1 6V (Sigma)/l .6L
Duratec-1 6V (Sigma) 303-01 A-1 05
DISASSEMBLY AND ASSEMBLY
OF SUBASSEMBLIES
Cylinder Head(21 165 6)
' Disassembly 5. Remove the fuel supply manifold.
I. Disconnect the temperature and manifold Discard the O-ring seals.
absolute pressure (T-MAP) sensor electrical
connector.
2. Disconnect the throttle plate control motor
(DC-ISC) electrical connector.
3. Disconnect the fuel injector electrical
connectors.
6. Remove the intake manifold.
Discard the gaskets.
7. Remove the engine rear lifting eye.
8. Remove the coolant distribution housing and
1 ~~~0001735 the ignition coil (El).
4. Remove the engine wiring harness.
2006.0 Fiesta 1212006 G202085en
procarmanuals.com