Wrangler L6-4.0L VIN S (2000)
The Camshaft Position Sensor (CMP) 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.
NOTE: Do not attempt to rotate the oil pump drive to modify ignition timing.
Two different procedures are needed 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.
REMOVAL-SENSOR ONLY
1. Disconnect electrical connector at CMP sensor.
2. Remove 2 sensor mounting bolts.
3. Remove sensor from oil pump drive.
INSTALLATION-SENSOR ONLY
1. Install sensor to oil pump drive.
2. Install 2 sensor mounting bolts and tighten to 2 Nm (15 in. lbs.) torque.
3. Connect electrical connector to CMP sensor.
REMOVAL-OIL PUMP DRIVE AND SENSOR
If the CMP and oil pump drive are to be removed and installed, do not allow engine crankshaft or camshaft to rotate. CMP sensor relationship will be
lost.
1. Disconnect electrical connector at CMP sensor.
2. Remove 2 sensor mounting bolts.
3. Remove sensor from oil pump drive.
4. Before proceeding to next step, mark and note rotational position of oil pump drive in relationship to engine block. After installation, the CMP
sensor should face rear of engine 0°.
5. Remove hold-down bolt and clamp.
6. While pulling assembly from engine, note direction and position of pulse ring. After removal, look down into top of oil pump and note direction
and position of slot at top of oil pump gear.
7. Remove and discard old oil pump drive-to-engine block gasket.
INSTALLATION-OIL PUMP DRIVE AND SENSOR
1. Clean oil pump drive mounting hole area of engine block.
2. Install new oil pump drive-to-engine block gasket.
