SENSOR/SWITCH-ENGINE OIL PSI
DESCRIPTION
The oil pressure switch is located on the left front side of the engine block. The oil pressure switch is a pressure sensitive switch that is activated by the engine's oil pressure (in the main oil gallery). The switch is a two terminal device (one terminal is provided to the wiring harness and the other terminal is the switch's metal housing that screws into the engine block).
OPERATION
The oil pressure switch is normally “Closed.” The switch changes from a "Closed" circuit to an "Open" circuit, on increasing pressure of 7 psig. The oil pressure switch changes from an "Open" circuit to a "Closed" circuit, on decreasing pressure, between 2 psig and 4 psig.
REMOVAL
1. Raise vehicle.
2. Disconnect electrical connector.
3. Remove oil pressure sensor using oil pressure socket C-4597 (1) and discard sensor.
INSTALLATION
NOTE: If the oil pressure sensor is removed, it must be replaced with a new sensor.
CAUTION: The oil pressure sensor has tapered threads, over tightening could crack the engine block.
1. Install oil pressure sensor using oil pressure socket C-4597 (1) and tighten to 8 N·m (71 in. lbs.).
2. Connect electrical connector.