Heated Exhaust Gas Oxygen (HEGO) sensor - removal and refitting
Note: A new sealing ring will be required on refitting.
Removal
1 Apply the handbrake, then jack up the front
of the vehicle and support it on axle stands
(see “Jacking and Vehicle Support”).
2 Disconnect the battery negative lead.
3 Unclip the wiring and disconnect the sensor wiring plug (see illustration).
17.3 Heated exhaust gas oxygen (HEGO) sensor - 1.4 CFI engine
A Sealing ring
B HEGO sensor
C Sensor shield
4 Remove the sensor heat shield, then unscrew the sensor from the exhaust downpipe, and carefully remove it complete with sealing ring.
Warning: Do not touch the tip of the HEGO sensor.
Refitting
5 Refitting is a reversal of removal, bearing in
mind the following points.
6 Clean the sensor threads, and take care not to touch the tip of the sensor during the refitting procedure.
7 Use a new sensor sealing ring.
8 Tighten the sensor to the specified torque.
9 On completion, start the engine and check for leaks between the sensor and the exhaust downpipe.
See also:
Ford VV carburettor - removal and refitting
Note: Refer to the warning at the end of
Section 1 before proceeding. A new gasket
must be used on refitting.
Removal
1 Disconnect the battery negative lead.
2 Remove the air cleaner (Section 2). ...
Brake fluid pipes and hoses - removal and refitting
Caution: Refer to the
precautions in Section 1.
Removal
1 To remove a flexible hose, always free it
from any mounting bracket(s) first by prising
out the U-shaped retaining clip, and then
using ...
Inlet manifold - removal and refitting
SOHC models
Removal
1 Disconnect the battery negative lead.
2 Partially drain the cooling system.
3 Remove the air cleaner.
4 Disconnect the coolant hoses from the
automatic choke (where applica ...
