Jeep 5149141AF Sensor-CAMSHAFT

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The CMP sensor is located on the front-left (driver's side) of the cylinder head.

The camshaft reference sensor on the 3.3L and 3.8L engines requires a special factory tool (DRB-I) for diagnosis.

To disconnect the CMP sensor, start by disconnecting the cable from the negative battery terminal. For 3.7L V6 and 4.7L V8 engines, raise the front end of the vehicle and secure it on jackstands. Then, disconnect the electrical connector from the CMP sensor and remove the sensor mounting bolt. Inspect the CMP sensor O-ring for any damage and replace if necessary. Apply a small amount of clean engine oil to the sensor O-ring and use a rocking motion to install it into the sensor mounting bore. Ensure that the CMP sensor mounting flange is fully seated against the mounting surface. For Hemi engines, remove the air filter housing and/or air intake tube, disconnect the electrical connector, and remove the sensor mounting bolt. Inspect the old CMP sensor O-ring for damage and replace if needed. Apply engine oil to the O-ring and install it using a rocking motion. Make sure the CMP sensor mounting flange is fully seated. For 3.6L V6 engines, remove the air filter housing and/or air intake tube, and if necessary, the upper intake manifold. Disconnect the electrical connector, unscrew the sensor mounting bolt, and pull the sensor from the valve cover. Check the O-ring for damage and apply engine oil before reinstalling the sensor. The remaining installation steps are the reverse of removal.