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:
Rear wheel cylinder - removal, overhaul and refitting
Note: Before starting work, refer to the
warning at the beginning of Section 2
concerning the dangers of asbestos dust, and
to the warning at the beginning of Section 3
concerning the dangers of h ...
Engine/transmission mountings - removal and refitting
Pre-1986 models
1 The engine mountings can be removed if
the weight of the engine/transmission is first
taken by one of the three following methods.
2 Either support the engine under the sump
usi ...
Anti-lock Braking System - description
1 From 1986 onward an anti-lock braking
system is available as standard or optional
equipment on certain Escort models.
2 The system comprises four main
components: two modulators, one for each
b ...
