Oil Pressure Gauge

The oil pressure gauge is an analog device that is located in the instrument cluster. The oil pressure gauge is operated directly by the oil pressure sensor circuit only when the ignition switch is in the RUN or START positions. As the engine oil pressure changes, the resistance of the sensor changes and the current flow to the oil pressure gauge causes the needle to move in order to appropriately display the engine oil pressure. A sensor resistance of 1 ohm will display as 0 kPa (0 psi) and a resistance of 88 ohms will display as 550 kPa (80 psi). The instrument cluster also monitors the oil pressure sensor circuit and interprets the current flow in this circuit in order to decide when engine oil pressure is too low. The instrument cluster will turn ON the CHECK GAUGES indicator when the engine is running and oil pressure is too low. The oil pressure sender is located on the left side of the 2.2 L engine. The oil pressure sender is located at the top left side, near the distributor/high voltage switch for the 4.3 L engine.