Sensor

Air Flow Sensor Cut-away:

The Air Flow Sensor is located on the right side of the engine compartment just forward of the shock tower and below the black rubber intake air hose. The Air Flow Sensor is upstream of the throttle valve so that it measures all the air which enters the engine. It consists of an air funnel in which the air sensor plate lever is free to pivot. The air flowing through the funnel deflects the sensor plate by a given amount out of its zero position, this movement is transmitted by the sensor plate lever to the control plunger which determines the basic injection quantity required for the basic functions. Considerable pressure shocks can occur in the intake system if backfiring takes place in the intake manifold. For this reason, the Air Flow Sensor is so designed that the sensor plate can swing back in the opposite direction in case of misfire, and past its zero position to open a relief cross-section in the funnel. An adjustable leaf spring is fitted to ensure the correct zero position of the air flow plate in the switched off or not running phase.