Distributorless Ignition System (DIS) components - removal and refitting

Electronic modules 1 Refer to Section 6.

DIS coil
2 Refer to Section 4.

Engine speed sensor
Removal
3 Disconnect the battery negative lead.

4 Disconnect the sensor wiring plug (see illustration).

7.4 Disconnecting the engine speed sensor wiring plug - DIS
7.4 Disconnecting the engine speed sensor wiring plug - DIS

5 Remove the securing screw and withdraw the sensor.

Refitting
6 Refitting is a reversal of removal.

Engine Coolant Temperature (ECT) sensor
Removal
7 The ECT sensor is screwed into the inlet manifold (see illustration).

7.7 Engine coolant temperature sensor location (arrowed) - DIS
7.7 Engine coolant temperature sensor location (arrowed) - DIS

8 Disconnect the battery negative lead.

9 Partially drain the cooling system as described in Chapter 1.

10 Disconnect the sensor wiring plug.

11 Unscrew the sensor from the inlet manifold.

Refitting
12 Refitting is a reversal of removal, but on completion top up the cooling system as described in “Weekly checks”.

    See also:

    Ford Sierra Service and Repair Manual
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    Examination and renovation
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