Seville STS V8-4.6L VIN 9 (1998)
Crankshaft Position Sensor: Description and Operation
Description
Crankshaft Sensors
The two crankshaft sensors are located on the front bank (BANK 2) of the engine block between cylinders 4 and 6. Crankshaft position A sensor is
located in the upper crankcase and crankshaft position B sensor is located in the lower crankcase. Both sensors extend into the crankcase and are sealed
to the engine block with O-rings. The crankshaft position sensors are not adjustable. The magnetic crankshaft position sensors operate similar to the
pickup coil in a distributor. When a piece of steel (called a reluctor) is repeatedly moved over the sensor, a voltage will be created by the sensor that
appears to go On-Off-On-Off-On-Off. This On-Off signal is also similar to the signal that a set of breaker points in a distributor would generate as the
distributor shaft turned and the points opened and closed.
