Idle Speed Control Valve (ISCV) - removal, cleaning and refitting
1 Disconnect the battery negative lead.
2 Disconnect the valve wiring plug (see illustration).
12.2 Idle speed control valve - 1.6 EFI engine
A Wiring plug B Securing bolts
3 Unscrew the two securing bolts, and withdraw the valve from the air cleaner housing.
4 Remove the valve as described earlier in this Section.
5 Immerse the valve in a container of clean petrol and allow it to soak for approximately three minutes.
6 Use a clean paint brush to clean the bore, slots and piston of the valve.
7 Using a small screwdriver, carefully move the piston up and down in the bore (do not use the slots to do this), then rinse the valve with petrol and dry it, preferably using compressed air (see illustration).
12.7 Using a screwdriver to move the idle speed control valve piston - 1.6 EFI engine
8 Refit the valve as described in the following paragraphs.
9 Refitting is a reversal of removal, ensuring that the mating faces of the valve and air cleaner are clean.
10 On completion, start the engine and check that the idle speed is stable, and that there are no air leaks. Warm the engine up to normal operating temperature, then switch on all available electrical loads and check that the idle speed is maintained.
Auxiliary air device - removal and refitting
K-Jetronic system Removal 1 Disconnect the battery earth lead. 2 Disconnect the wiring multi-plug and the two air hoses from the device which is located beneath the cold start valve (see illustra ...
Inlet manifold - removal and refitting
SOHC models Removal 1 Disconnect the battery negative lead. 2 Partially drain the cooling system. 3 Remove the air cleaner. 4 Disconnect the coolant hoses from the automatic choke (where applica ...
Fuel pump shut-off switch
This device stops the electric fuel pump from sending fuel to the engine when your vehicle has had a substantial jolt. After an accident, if the engine cranks but does not start, this switch may ...