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Home >> Jeep >> 2004 >> Wrangler Sahara, Automatic >> Repair and Diagnosis >> Engine Performance >> Ignition System >> Ignition Control >> Camshaft Position Sensor - 4.0L >> Removal - 4.0L
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Removal - 4.0L

The Camshaft Position Sensor (CMP) on the 4.0L 6-cylinder 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.

Fig 1: Identifying CMP & Oil Pump Drive Shaft - 4.0L
G01709054Courtesy of DAIMLERCHRYSLER CORP.
Fig 2: Locating CMP - 4.0L
G01709055Courtesy of DAIMLERCHRYSLER CORP.

The rotational position of oil pump drive determines fuel synchronization only. It does not determine ignition timing.

NOTE: Do not attempt to rotate the oil pump drive to modify ignition timing.

Two different procedures  are used for removal and installation. The first procedure will detail removal and installation of the sensor only. The second procedure will detail removal and installation of the sensor and oil pump drive shaft assembly. The second procedure is to be used if the engine has been disassembled.

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.

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