- Test and verify proper oil level and the engine oil pressure. See Sections 1 and 3 for more information. If no or insufficient pressure exists, oil pressure problem exists and gauge and sensor are operational, repair oil pressure problem.
- Start the engine and observe the oil pressure warning lamp.
- If the lamp stays on continuously, turn the engine off, then turn the ignition key to the run position.
- Unplug the sensor electrical harness and observe the oil pressure warning lamp. If the lamp does not illuminate, the sensor is defective and should be replaced.
REMOVAL & INSTALLATION
This procedure requires draining some of the engine oil. However, it is recommended to drain all of the oil and perform a complete oil change procedure. Refer to General Information & Maintenance for the oil change procedure.
- Disconnect the negative battery cable.
- Raise and safely support the vehicle.
- Drain at least 2 quarts of oil from the engine into a suitable container.
- Detach the electrical connector from the sensor.
- Remove the sensor using a 1 in. socket or wrench.
- Install the sensor and tighten to 15-25 ft. lbs. (20-34 Nm).
- Connect the electrical connector.
- Tighten the oil pan drain plug to 8-12 ft. lbs. (11-16 Nm) on 4.6L engines or 15-25 ft. lbs. (20-34 Nm) on 5.0L and 5.8L engines.
- Lower the vehicle.
- Add oil to the proper level.
- Connect the negative battery cable, start the engine and check for leaks.
See Figure 1