Removal/refitting

The opening and closing controls are independent due to a double electromagnetic circuit with considerable advantages in terms of prompt adjustment. In fact, as the control unit is "self-adaptive", it is necessary to follow and "detect" the changes that occur in the engine (different internal frictions at different temperatures, settling of the engine over the course of time etc.) so that idle speed remains constant under all conditions. Lastly, in the event of a fault, a spring moves the actuator to an intermediate degree of opening to enable the car to reach an authorised service centre.

REMOVAL/REFITTING

• Disconnect the battery (-) terminal.

1. Disconnect the electrical connection from the constant idle speed actuator.
2. Slacken the two fastening screws and remove the constant idle speed actuator from the throttle body.

• Remove the seal.

• Disconnect the vacuum takeoff pipe from the servo-brake.

1. Disconnect the lambda probe connector.
2. Slacken the fastening screws and remove the electrical connection support bracket.

1. Raise the car, slacken the fastening screws and remove the reinforcement bracket.
2. Remove the front section of the exhaust pipe complete with lambda probe after slackening the fastenings.

AIR INTAKE BOX

REMOVAL/REFITTING

• Set the car on a lift.
• Disconnect the battery (-) terminal.
• Remove the throttle body (see specific paragraph).

1. Disconnect the electrical connection from the E.G.R. modulation solenoid valve.
2. Disconnect the E.G.R. valve connection pipe from the modulation solenoid valve.
3. Disconnect the vacuum takeoff pipe for the fuel pressure regulator.