F 350 4WD Super Duty V8-6.4L DSL Turbo (2008)
Crankshaft Position Sensor: Description and Operation
CRANKSHAFT POSITION (CKP) SENSOR
Crankshaft Position (CKP) Sensor
The CKP sensor is a magnetic transducer mounted on the engine block, adjacent to a pulse wheel located on the crankshaft. The pulse wheel is a 60
minus 2 tooth steel disk with 58 evenly spaced teeth and a minus 2 tooth slot. As the crankshaft rotates, the CKP produces a sine wave for each tooth
edge of the pulse wheel and it detects the missing 59th and 60th tooth. This configuration allows the CKP sensor to provide the PCM with the angular
position of the crankshaft relative to a fixed reference for the CKP sensor. The PCM uses the CKP sensor input to calculate engine RPM, fuel timing,
fuel quantity and duration of the fuel injection.
