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 ...
Sump - removal and refitting
Note: New gaskets and sealing strips will be
required for refitting, and sealing compound
will be required to coat the gasket faces.
Removal
1 If the engine is in the vehicle, proceed as
follows, ...
Disc pads - inspection and renewal
Caution: Refer to the
precautions in Section 1.
Front disc pads
1 The disc pad friction material can be
inspected for wear without removing the
roadwheels. Working beneath the vehicle,
insert a ...
