Oil pressure and oil pressure switches, checking
WARNING: This page does not describe the selected car, but rather 26 other vehicles, including the 2002 Volkswagen Cabrio, 2001 Volkswagen Cabrio, 2000 Volkswagen Cabrio, 1999 Volkswagen Jetta, and 1999 Volkswagen Golf. However, it is still accessible from the selected car via links, so may be relevant.
- Remove 0.3 bar oil pressure switch -F22 - (brown insulation) and install into VAG1342 tester.
NOTE:
08.95 and up: 0.25 bar oil pressure switch -F22 - with blue insulation.
- Connect tester to cylinder head in place of oil pressure switch -F22-.
- Connect brown wire -3- from tester to Ground (GND).
- Connect voltage tester VAG1527B with adapter cables from VAG1594 to battery positive voltage (B+) and oil pressure switch -A-.
LED should light up.
- Start engine and increase RPM slowly.
At 0.15 -0.45 bar (2.1 -6.5 psi), LED should go out.
If LED does not light up:
- Replace oil pressure switch -F22 -.
- Connect voltage tester with 1.8 bar Oil Pressure Switch -F1- (white insulation) -B-.
At 1.6-2.0 bar (23-29 psi) LED must light up.
If LED does not light up:
- Replace Oil Pressure Switch -F1-.
- Increase RPM further.
- At 2000 RPM and 80 °C (176 °F) oil temperature, oil pressure must be min. 2.0 bar (29 psi)
- At higher RPM, oil pressure must not exceed 7.0 bar (101 psi).
- If necessary, replace oil pump cover with pressure relief valve.