Crankshaft Position Sensor

A crankshaft pulse ring with 4 lobes is pressed onto the vibration damper at the front of the crankshaft. The 4 lobes are spaced 90° apart. The EEC ring is positioned 10° BTDC on the crankshaft. As the crankshaft rotates, the pulse ring lobes pass the tip of the crankshaft position sensor. The sensor contains a permanent magnet and coil. As the lobes cut through the magnetic field of the sensor, an output voltage is generated in the coil and sent to the ECA. The ECA converts these signals to crankshaft (piston) position for spark timing and into RPM for spark advance calculation. The sensor is attached to the engine block and locked in place by a clip and screw. The sensor has no adjustment.