Dodge Ram Truck 1500-2500-3500. Manual — part 1465

5.7L V-8

Engine speed and crankshaft position are provided
through the CKP (Crankshaft Position) sensor. The
sensor generates pulses that are the input sent to the
Powertrain Control Module (PCM). The PCM interprets
the sensor input to determine the crankshaft position.
The PCM then uses this position, along with other
inputs, to determine injector sequence and ignition
timing.

The sensor is a hall effect device combined with an
internal magnet. It is also sensitive to steel within a
certain distance from it.

A tonewheel is bolted to the engine crankshaft. This
tonewheel has sets of notches (3) at its outer edge.

The notches cause a pulse to be generated when they
pass under the sensor. The pulses are the input to the
PCM.

REMOVAL

3.7L V-6

The Crankshaft Position (CKP) sensor is mounted into
the right rear side of the cylinder block. It is positioned
and bolted into a machined hole.

1. Raise vehicle.

2. Disconnect sensor electrical connector.

3. Remove sensor mounting bolt (1).

4. Carefully twist sensor (2) from cylinder block.

5. Check condition of sensor o-ring (3).

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4.7L V-8

The Crankshaft Position (CKP) sensor is located at
the right-rear side of the engine cylinder block. It is
positioned and bolted into a machined hole in the
engine block.

1. Raise vehicle.

2. Disconnect CKP electrical connector at sensor.

3. Remove CKP mounting bolt (2).

4. Carefully twist sensor (1) from cylinder block.

5. Remove sensor from vehicle.

6. Check condition of sensor o-ring.

5.7L V-8

The Crankshaft Position (CKP) sensor (4) is located at
the right-rear side of the engine cylinder block. It is
positioned and bolted into a machined hole in the
engine block.

1. Raise vehicle.

2. Disconnect CKP electrical connector at sensor.

3. Remove CKP mounting bolt (3).

4. Carefully twist sensor (4) from cylinder block.

5. Remove sensor from vehicle.

6. Check condition of sensor o-ring.

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FUEL INJECTION - GAS

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8.3L - SRT-10

The sensor is located at the rear lower passenger side
of motor.

1. Disconnect electrical connector from crankshaft

position sensor.

2. Remove sensor mounting bolt.

3. Pull sensor out. A light tap to top of sensor may

ease removal.

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INSTALLATION

3.7L V-6

1. Clean out machined hole in engine block.

2. Apply a small amount of engine oil to sensor o-ring

(3).

3. Install sensor into engine block with a slight rocking

and twisting action.

CAUTION: Before tightening sensor mounting bolt,
be sure sensor is completely flush to cylinder
block. If sensor is not flush, damage to sensor
mounting tang may result.

4. Install mounting bolt and tighten to 28 N·m (21 ft.

lbs.) torque.

5. Connect electrical connector to sensor.

6. Lower vehicle.

4.7L V-8

1. Clean out machined hole in engine block.

2. Apply a small amount of engine oil to sensor

o-ring.

3. Install sensor (1) into engine block with a slight

rocking and twisting action.

CAUTION: Before tightening sensor mounting bolt,
be sure sensor is completely flush to cylinder
block. If sensor is not flush, damage to sensor
mounting tang may result.

4. Install mounting bolt and tighten to 28 N·m (21 ft.

lbs.) torque.

5. Connect electrical connector to sensor.

6. Lower vehicle.

DR/DH

FUEL INJECTION - GAS

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