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:
Cylinder head - dismantling and reassembly
Note: A valve spring compressor will be
required during this procedure. New valve
stem oil seals should be used on
reassembly.
1.8 litre (R2A type)
Dismantling
1 With the cylinder head removed, ...
Starter motor - brush renewal
Bosch long frame and JF, and
Cajavec types
1 With the starter motor removed from the
vehicle and cleaned, grip the unit in a vice
fitted with soft jaw protectors.
2 Remove the two screws securing ...
Bumper components - removal and refitting
Bumper overriders
Removal
1 On pre-1986 models the overrider is held to
the bumper by a clamp screw. Find this screw
on the underside of the bumper and release it
- the overrider can then be with ...
