Throttle body

THROTTLE BODY

The throttle body adjusts the amount of air sent to the intake box depending on the accelerator pedal position.

The accelerator cable acts on a special sector of pulley locked on the throttle valve pivot pin. A coil spring allows the throttle to return to the closed position.

To prevent the formation of ice on the throttle valve which would prevent it from returning to the closed position, the throttle body is heated by the engine coolant fluid.

REMOVING/REFITTING

• Disconnect the battery (-) terminal.

1. Disconnect the electrical connection from the intake air temperature sensor.
2. Disconnect the electrical connection from the throttle potentiometer.
3. Disconnect the oil vapour recovery pipe leading from the right cylinder head from the corrugated sleeve.
4. Disconnect the air takeoff tube for the constant idle device from the corrugated sleeve.

12 ÷ 15 Nm
1.2 ÷ 1.5 kgm

1. Disconnect the accelerator cable from the throttle.
2. Disconnect the engine coolant inlet and outlet pipes from the throttle body.
3. Slacken the fastening screws and remove the throttle body complete with potentiometer, and, if necessary separate them on the bench.
4. - Retrieve the accelerator cable support bracket and the throttle body seal.

1. Prise of the button fastening the first section of the corrugated sleeve to the intermediate resounder.
2. Slacken the two fastening clamps and remove the second section of the corrugated sleeve complete with resounders.