Exhaust gas oxygen (HEGO) sensor (2.0 litre DOHC/1.6 & 1.8 litre (R6A type) CVH) - removal and refitting
Note: Do not touch the tip of the HEGO sensor as this will drastically shorten its service life.
Note: A new sealing ring should be used on refitting.
Removal
1 Ensure that the engine and the exhaust
system are cold.
2 Disconnect the battery negative lead.
3 Apply the handbrake, then jack up the front of the vehicle, and support it securely on axle stands (see “Jacking and Vehicle Support”).
4 Disconnect the sensor wiring plug halves by releasing the locktabs and pulling on the plug halves, not the wiring.
5 Where fitted, slide the heat shield from the sensor (see illustration).
35.5 Sliding the heat shield from the exhaust gas oxygen sensor
6 Unscrew the sensor from the exhaust downpipe, and recover the sealing ring. Do not touch the tip of the sensor if it is to be refitted.
Refitting
7 Commence refitting by ensuring that the
sensor threads and the corresponding
threads in the downpipe are clean.
8 Refit the sensor using a new sealing ring, and tighten it to the specified torque.
9 Further refitting is a reversal of removal, but on completion start the engine, and check for leaks around the sensor sealing ring.
See also:
Door lock - removal and refitting
Models up to 1990
1 Remove the door inner trim panel.
2 Where necessary for improved access, peel
back the waterproof plastic sheet from the
door.
3 Withdraw the window channel extension
through ...
Carbon canister-purge solenoid (models with catalytic converter) - removal
and refitting
2.0 litre DOHC models
1 The purge solenoid is located next to the
carbon canister, on the right-hand side of the
engine compartment.
2 Disconnect the battery negative lead.
3 Disconnect the solen ...
Throttle housing - removal and refitting
Note: A new gasket must be used on refitting.
Removal
1 Disconnect the battery negative lead.
2 Depressurise the fuel system as described
in Section 6.
3 Remove the air inlet pipe (see illustrati ...
