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:
General description
The body is of welded steel construction
available in 3 or 5-door Hatchback, 3 or 5-
door Estate, soft-top Cabriolet, or Van
configurations.
The body is of monocoque construction
and is of energy ...
Load apportioning valve (P100 models) - adjustment
Models before mid-April 1989
1 The vehicle must be unladen, at normal
kerb weight (a full tank of petrol, but no driver
or load).
2 With the vehicle standing on its roadwheels,
remove the spring ...
ESC II system components - removal and refitting
Note: Procedures for removal and refitting of
the ignition system components and
electronic module are given elsewhere in the
relevant Sections of this Chapter.
1 Disconnect the battery negative l ...
