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 cooling system is of the pressurised
pump-assisted thermo-syphon type. The
system consists of the radiator, water pump,
thermostat, electric cooling fan, expansion
tank and associated hoses.
...
Exhaust emission control system components - removal and
refitting
Carburettor engines
Spark delay/sustain valve
Removal
1 Disconnect the vacuum lines at the valve
and remove the valve from the engine.
Refitting
2 When refitting a spark delay valve it must
be ...
Engine - refitting (automatic transmission in vehicle)
1 Reverse the procedure described in Section
10, noting the following points:
2 Check that the engine adapter plate is
correctly positioned on its locating dowels.
3 As the torque converter is onl ...
