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Home >> Volvo >> 1987 >> 780 AW71 >> Repair and Diagnosis >> Engine Performance >> System >> Fuel Injection System - BOSCH LH (Non Turbo) >> Description >> Sensors >> Engine Speed

Engine Speed

The engine speed signal is generated by an electronic (Hall Effect) ignition distributor. The low voltage ignition primary pulses are monitored at low tension side of ignition coil. Injection timing is regulated by this signal.