Crankshaft Position Sensor: Service and Repair

1997 Oldsmobile LSS V6-3.8L VIN KSECTION Service and Repair



Crankshaft Position Sensor:






REMOVAL PROCEDURE
1. Disconnect the negative battery cable.
2. Remove the serpentine belt(s) from the crankshaft pulley.
3. Raise the vehicle on a hoist.
4. Remove the right front wheel and tire assembly.
5. Remove the right inner fender access cover.
6. Hold the flywheel with J 37096 or equivalent Flywheel Holding Tool.
7. Using 28 mm socket, remove the crankshaft harmonic balancer retaining bolt.
8. Remove the crankshaft harmonic balancer using special tool J 38197 or equivalent Balancer Remover. (Do Not use a pry bar)
9. Remove the crankshaft position sensor shield
10. Disconnect the sensor electrical connector.
11. Remove 2 attaching bolts from the crankshaft position sensor.
12. Remove the crankshaft position sensor from block face.

INSTALLATION PROCEDURE
1. Position the crankshaft position (CKP) sensor to the block.
2. Install the bolts to hold the CKP sensor to the block face.
- Tighten the bolts to 20-40 Nm (14-28 lb ft).
3. Install the crankshaft position sensor shield.
4. Connect the CKP sensor electrical connector.
5. Position the crankshaft harmonic balancer on the crankshaft.
6. Hold the flywheel with J 37096 or equivalent Flywheel Holding Tool.
- Using J 36660 or equivalent Torque/Angle Meter, tighten the harmonic balancer bolt to 150 Nm +76 degrees (111 lb ft +76 degrees).
7. Install the right inner fender access cover.
8. Install the right front wheel and tire assembly.
- Tighten the wheel nuts to 140 Nm (104 lb ft).
9. Lower the vehicle.
10. Install the serpentine belt(s).
11. Connect the negative battery cable.
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.