The crank shaft position sensor is located on the lower portion of the timing cover to the left side of the crank pully if facing the engine. You will see a two wire harness that comes down around the a/c compressor that pluggs into the sensor. Remove the wire by squeezing the tab with your fingers and pulling away from the sensor. The sensor is held in by one eight mm bolt. After you remove the bolt twist and pull the sensor until it comes out of the hole. To install, reverse removal procedure.