Contents: Removal and installation ↓ Examination ↓
The oil pressure sensor is installed in the engine crankcase and serves to detect excessively low oil pressure for the engine. When the pressure drops below the permissible limit, the corresponding control lamp on the instrument panel lights up. When the engine is not running, there is no oil pressure, so this lamp lights up immediately after the ignition is turned on.
After the engine starts, the oil pump starts working and oil pressure builds up. The switch inside the sensor turns off and the indicator light goes out, indicating that the pressure is sufficient. If the warning light comes on briefly when the vehicle is turning sharply, this usually indicates an insufficient oil level in the oil sump.
Removal and installation
Disconnect the electrical wire from the oil pressure sensor and unscrew the sensor.
When installing, carefully screw in the sensor and tighten to a torque of 10 Nm (1.0 kgfm).
Examination
Screw the control pressure gauge with adapter into place of the oil pressure sensor.
Connect the test lamp to the oil pressure sensor and terminal 15 of the ignition coil.
Turn on the ignition. The indicator light should come on. Otherwise, replace the sensor.
Start the engine and slowly increase the speed, thereby increasing the oil pressure. At a pressure of 0.15-0.45 bar (atm), the control lamp on the instrument panel should go out.
Increase engine speed further. At a speed of approximately 2000 rpm and an oil temperature of approximately 80°C, the minimum oil pressure should be 2.0 bar (atm).
If the oil pressure at these speeds does not reach the specified value, this indicates wear of the crankshaft bearings.
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