Intake Air Sensor
The intake air sensor (temperature sensor I) provides the electronic control unit with voltage signals. The intensity of these signals, depends upon intake air volume and air temperature. The incoming air moves the stator flap against the force of the return spring. As more air is drawn in, stator flap opens even more. See Fig 1.
This rotary motion of the stator flap actuates a potentiometer and thus varies the signal sent to the electronic control unit. Connected to the stator flap is a dampening flap which prevents rapid oscillations of the stator flap. One of the contacts on the potentiometer operates the fuel pump as the stator flap is opened by air flow.