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:
Oil pump - dismantling, inspection and reassembly
Note: A new pressure relief valve plug and
pick-up tube gasket will be required for
reassembly.
Dismantling
1 If oil pump wear is suspected, check the
cost and availability of new parts and the c ...
Starter motor brushes - renewal
1 Starter motor brush renewal is a relatively
difficult procedure, requiring skill in the use of
a soldering iron. It should also be borne in
mind that if the starter motor has been in
service lon ...
Crankshaft and main bearings - removal and refitting
Removal
1 With the engine removed from the vehicle,
remove the timing belt, crankshaft sprocket,
auxiliary shaft sprocket and the
flywheel/driveplate.
2 Remove the pistons and connecting rods. If ...
