Download The Camshaft Position Sensor (CMP) on the 4.0L 6cylinder engine is bolted to the top of the oil pump drive shaft assembly. The sensor and drive shaft assembly is located on the right side of the engine near the oil filter. The rotational position of oil pump drive determines fuel synchronization only. It does not determine ignition timing. WARNING Do NOT attempt to rotate the oil pump drive to modify ignition timing. 1. Two different procedures are used for Removal & Installation. The first procedure will detail Removal & Installation of the sensor only. The second procedure will detail Removal & Installation of the sensor and oil pump drive shaft assembly. The second procedure is to be used if the engine has been disassembled. 2. An internal oil seal is used in the drive shaft housing that prevents engine oil at the bottom of the sensor. The seal is not serviceable. Sensor Only 1. Disconnect electrical connector at CMP sensor. 2. Remove 2 sensor mounting bolts. 3. Remove sensor from oil pump drive. Oil Pump Drive & Sensor WARNING If the CMP and oil pump drive are to be removed and installed, do NOT allow engine crankshaft or camshaft to rotate.