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Home >> Porsche >> 1988 >> 944 Base, Standard >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> DME Digital Engine Control >> Operation >> Engine Sensors >> Speed Sensor
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Speed Sensor

The speed sensor is mounted on an adjustable bracket with the reference mark. The speed sensor measures engine speed by counting the teeth on starter ring gear. The speed sensor sends 2 voltage pulses to the control unit for each tooth that passes.