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Home >> Subaru >> 1984 >> GL 2D Hardtop, 1.8 4, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Feedback Carburetor System >> Operation >> Data Sensors >> Engine Speed
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Engine Speed

Engine speed signal is received from ignition coil. Electrical signals from ignition coil are sent to ECM where time between signals is used to calculate engine speed. This information is used by ECM for controlling fuel mixture, EGR and air injection system.