The oil pressure sender is threaded into an oil passage at the rear of the block.
See Figure 1
- Unplug the oil pressure sender electrical connection.
- Using a high impedance Digital Volt Ohmmeter (DVOM), measure the resistance between the sender terminals and ground.
- The resistance should be less than approximately 5 ohms.
- Start the engine and using the DVOM, measure the resistance between the sender terminals and ground.
- The resistance should be greater than 10.000 ohms at idle.
- If the resistances do not meet specification, replace the sender.
- If the resistances are as specified, check the circuit wiring for damage or a short to ground.
REMOVAL & INSTALLATION
See Figure 2
- Raise the car and support it with safety stands.
- Locate the oil pressure sending unit on the engine.
- Disconnect the sending unit electrical harness.
- Unfasten and remove the sending unit from the engine.
- Install the sending unit and tighten to 9-13 ft. lbs. (12-18 Nm) on 1.8L and 1.9L engines. On 2.0L SOHC engines, tighten the sender to 98-141 inch lbs. (11-16 Nm) and 19 ft. lbs. (27 Nm) on 2.0L DOHC engines.
- Attach the sending unit's electrical connector.
- Remove the safety stands and lower the car.
- Start the engine, allow it to reach operating temperature and check for leaks.
- Check for proper sending unit operation.