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:
Contact breaker points adjustment - models with contact breaker
distributor (Every 6000 miles or 6 months)
1 Spring back the retaining clips or undo the
screws as appropriate and lift off the
distributor cap.
2 Withdraw the rotor arm from the distributor
shaft.
3 Using a screwdriver, gently prise the
...
Inlet manifold - removal and refitting
Caution: Refer to the
precautions in Section 1 before
proceeding.
Note: A tachometer and an exhaust gas
analyser will be required to check the idle
mixture on completion. A new gasket must be
us ...
Sump - removal and refitting
Note: A new gasket and new sump bolts must
be used when refitting, and suitable sealant will
be required (available from a Ford dealer). Note
that it is preferable to keep the engine upright
until ...