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:
Air conditioning system - component renewal
1 Only those items which can be renewed
without discharging the system are described
here (see illustration). Other items must be
dealt with by a Ford dealer or air conditioning
specialist.
21. ...
Heater unit - overhaul
1 With the heater unit removed from the
vehicle, remove the two securing screws and
withdraw the heater matrix from the casing
(see illustrations).
19.1a Remove the securing screws . . .
19.1 ...
Hydraulic pipes and hoses - renewal
Note: Before starting work, refer to the
warning at the beginning of Section 3
concerning the dangers of hydraulic fluid.
1 Always disconnect a flexible hose by
prising out the spring anchor clip ...
