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:
Electrical fault-finding - general information
Note: Refer to the precautions given in “Safety
first!” and in Section 1 of this Chapter before
starting work. The following tests relate to testing
of the main electrical circuits, and should not ...
Body exterior fittings - removal and refitting
Spoilers and wheel arch
deflectors
Removal
1 The spoilers and wheel arch deflectors
fitted to XR3, XR3i, Cabriolet and RS Turbo
models are secured by screws, rivets and
clips, or a combination o ...
Engine/automatic transmission assembly - reconnection and refitting
1 Reverse the procedure described in
paragraphs 1 to 25 of Section 8, noting the
following points.
2 Check that the engine adapter plate is
correctly positioned on its locating dowels. If
necessa ...
