Question about 1988 Volkswagen Cabriolet

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What is the correct oil pressure on a 1988 vw cabriolet

After half hour or so of driving the oil light flashes and I also hear a buzzer along with the oil light. Its not constant I may hit the gas and it stops, but it will come back again.
What should the VDO bar gauge read. and what causes the high oil pressure after half hour of driving

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  • hectordiaz2u Jun 23, 2009

    The vdo bar gauge reads from 0 to 5 and its an oil pressure gauge used on the VW Cabriolet.
    I'm just confused why would the oil light go off when I rev the engine, when one would think it would have the opposite affect.





  • hectordiaz2u Jul 01, 2009

    I changed oil and filter and this solved the problem
    and now the oil pressure is at its proper reading
    Thank you emmetmyers you where correct!!

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A plunged oil filter will do this so will a bad oil reg.
try changing your oil and get a new filter
also you may have had the incorrect filter on it "some shops do this"

Posted on Jun 23, 2009

  • Emmet Myers
    Emmet Myers Jun 23, 2009

    0-5 psi is LOW so when you rev it it makes the pressure MORE and turns off the light
    sorry for the last comment i thought you meant it was high


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Well the oil pressure is high from what you say. That's an oil pump going bad, the regulator is malfunctioning. The only way to fix it is to replace it. If you mis-typed & it's low the same applies.The vod,I believe is the engine vaccuum in inches of mercury,hg. Good would be 20-25 at cruising speed. About 40mpg.

Posted on Jun 23, 2009

  • Pete MacSparran
    Pete MacSparran Jun 23, 2009

    When you rev the engine it increases oil pressure,hopefully.You say it's high to begin with. So based on that,replace the pump & the pressure regulator is built in so it should be fine.

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