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 automatic choke components - removal,
checking and refitting
Bi-metal housing
Note: A new gasket will be required on
refitting.
Removal
1 Disconnect the battery negative lead.
2 Remove the air cleaner as described in
Section 2.
3 Release any pressure in ...
General information and precautions
General information
From the 1990 model year, an Electronic
Fuel Injection (EFI) system controlled by the
Electronic Engine Control IV (EEC IV) system,
and incorporating an Electronic
Distributor ...
Fuel filter renewal - fuel injection engines (Every 24 000
miles or 2 Years)
Warning: This procedure may
result in some fuel spillage. Before
carrying out any operation on the
fuel system refer to the
precautions given in Safety First! at the
beginning of this manual and ...