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:
Heater controls - removal and refitting
Removal
1 Disconnect the battery negative lead.
2 Remove the securing screws and unclip the
lower and upper steering column shrouds.
3 Remove the four securing screws and
withdraw the instrument ...
Radiator grille panel - removal and refitting
Models up to 1987
1 With the bonnet raised, remove the four
grille panel securing screws from the top of
the front panel.
2 Lift the grille panel from its lower mounting
bushes, and withdraw it f ...
Rear suspension and final drive unit assembly (Saloon, Hatchback and Estate
models) - removal and refitting
Note: From May 1986, revised final drive unit
rear mounting bolts have been used in
production. Whenever the earlier type of bolts
are removed, they should be discarded and
the later type fitted. ...
