Checking oil pressure and oil pressure sensor (VW Polo 3)

1. Unscrew the pressure sensor and screw it into the tester (Fig. 3.21).



2. Screw the tester adapter into the hole for the pressure sensor in the cylinder head.

3. Connect the brown tester lead to "-".

4. Connect the VAG 1527 diode tester with an additional wire to the "+" of the battery and the pressure sensor.

5. Start the engine and slowly increase the engine speed. At a pressure of 0.15-0.35 bar the light should go out, otherwise replace the sensor. At 2000 rpm and a temperature of 80 'C the pressure should be 2.0 bar.

Cars produced since 09.97

6. Unscrew the pressure sensor and screw it into the tester (Fig. 3.21).

2. Screw the tester adapter into the hole for the pressure sensor in the cylinder head.

(The original text can be found at VWMANUAL.ru)

3. Connect the brown tester lead to "-".

4. Connect the VAG 1527 LED bulb with the additional VAG 1594 A wire to the battery "+" and the pressure sensor. The bulb should not light.

5. Start the engine, at idle speed at a pressure of 1.2-1.4 bar the lamp should light, otherwise replace the sensor. Gradually increase the engine crankshaft speed. At 2000 rpm and a temperature of 80°C the pressure should be at least 2.0 bar.