For 1990-2009 cars

### Removal Procedure

1. Turn the ignition Off.

Caution: Ensure that the vehicle is properly supported and squarely positioned. To help avoid personal injury when a vehicle is on a hoist, provide additional support for the vehicle on the opposite end from which the components are being removed.

2. Raise the vehicle.
3. Disconnect the engine oil pressure (EOP) switch harness connector.

Important: A 19 mm (3/4 in) crowfoot and 3/8 in. wobble drive extension 3 inches long, will allow access to the EOP switch for removal and torquing.

4. Remove the EOP switch.

### Installation Procedure

1. Apply RTV sealant or equivalent to the EOP switch threads.
2. Install the EOP switch.

Tighten
Tighten the oil pressure sending unit to 45 N·m (33 lb ft).

3. Connect the EOP switch harness connector. Push in the connector until a click is heard and pull back to confirm a positive engagement.
4. Lower the vehicle and run the engine.
5. Check for leaks.