INTERMITTENT OIL PRESSURE LIGHT

Discussion in 'Mk3' started by Bill Zuchero, Jul 8, 2023.

  1. BILL ZUCHERO

    Bill Zuchero New Member

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    The oil pressure light comes on sometimes. I changed the low pressure switch (blue) No change. I installed an oil pressure gauge. When the car was cold it was at 65 psi. After the engine warmed up it wemt down to 5-7 psi. Am I looking at an oil pump issue?
     
    Bill Zuchero, Jul 8, 2023
    #1
  2. STEPHEN STANYER

    stephen stanyer Forum Member

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    What milage has the car done?
     
    stephen stanyer, Jul 8, 2023
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  3. BILL ZUCHERO

    Bill Zuchero New Member

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    A little over180K
     
    Bill Zuchero, Jul 8, 2023
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  4. G60.

    G60. Forum Member

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    What oil rating are you using?
     
    G60., Jul 8, 2023
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  5. BILL ZUCHERO

    Bill Zuchero New Member

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    10-40
     
    Bill Zuchero, Jul 8, 2023
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  6. G60.

    G60. Forum Member

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    Might be an idea to try a thicker oil like 10w50 or 15w50 as your hot oil pressure is low.
     
    G60., Jul 8, 2023
    #6
  7. GVK

    GVK Paid Member Paid Member

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    Location:
    Lincs.
    Most VW engine oil pressure spec is 2 bar at 2000rpm (hot)

    180k is getting on with it, time for a rebuild, shells will be worn.
     
    GVK, Jul 8, 2023
    #7
  8. STEPHEN STANYER

    stephen stanyer Forum Member

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    Have you tried a compression check.
     
    stephen stanyer, Jul 9, 2023
    #8
  9. BILL ZUCHERO

    Bill Zuchero New Member

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    Compression is great
     
    Bill Zuchero, Jul 9, 2023
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  10. GVK

    GVK Paid Member Paid Member

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    Location:
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    Compression won't matter a thing to the oil pressure.

    Oil pump
    bearing tolerances
    pick up pipe blocked

    will!
     
    GVK, Jul 9, 2023
    #10

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