Throttle potentiometer

1. Slacken the clamp fastening the corrugated sleeve to the throttle body, slacken the air cleaner cover fastening screws, then remove it complete with air-flow meter and separate them on the bench.

1. If necessary, slacken the two fastening screws and take the air-flow meter off its support.

2. Withdraw and remove the intake air temperature sensor from the corrugated sleeve.

THROTTLE POTENTIOMETER

This is a potentiometer the mobile part of which is controlled directly by the throttle valve shaft. The potentiometer signals the control unit instantaneously when there is the need for "full power", anticipating the signal from the air-flow meter which records a considerable increase of the flow of air, thereby obtaining a more immediate response. The potentiometer automatically detects the throttle closed position through a "self-adapting" function. This eliminates the need for potentiometer adjustment operations and makes it possible to follow in time any wear occurring on the throttle closing position.

INTAKE AIR TEMPERATURE SENSOR (NTC)

The intake air temperature sensor is located on the air intake corrugated sleeve and measures the temperature of the air through an NTC thermistor with a negative resistance coefficient, i.e. capable of lowering its resistance as the temperature increases. The electric signal obtained reaches the electronic control unit where it is used to calculate the density of the air.

REMOVAL/REFITTING

• Disconnect the battery (-) terminal.

1. Disconnect the electrical connection from the intake air temperature sensor.

REMOVAL/REFITTING

• Disconnect the battery (-) terminal.

1. Disconnect the electrical connection from the throttle potentiometer.
2. Slacken the two fastening screws and remove the throttle potentiometer.