Vanagon Syncro AWD F4-2109cc 2.1L (MV) (1989)
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disconnect connector 1
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connect test lamp to wire 2 of 0.3 bar (4.4 psi) oil pressure switch and to alternator positive
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test lamp must light up
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start engine, raise RPM
When pressure goes to 0.15-0.45 bar (2.2-6.5 psi) test lamp must go OUT.
If not, replace oil pressure switch
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raise RPM
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at oil temperature of 80° C (176° F) and RPM of 2000, oil pressure should be 2.0 bar (29 psi)