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Low oil pressure problem

slowcoach3 Aug 13, 2017

  1. slowcoach3

    slowcoach3 Registered User

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    Today's problem;
    Low oil pressure. I had the light come on so being an educated 1.8t owner I changed out the pick up pipe and all was well for a few miles. Then I had the light again, so now I dropped the sump again, checked the immaculate pick up and fitted a new oil pump. All seemed well for 20 mins of mixed driving until I gave it a small kicking and the low oil pressure light came on a again!!!! The engine sounds beautiful, quiet and happy. New pick up, pump, filter and oil. Still the ****** light, does anyone have any suggestions of where to look next as it's doing my head in!
    Cheers
     
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  3. vag-tech

    vag-tech Site Sponsor Site Sponsor VCDS Map User

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    Oil pressure switch or switch circuit?
    Might want to get a pressure gauge on that.
     
  4. slowcoach3

    slowcoach3 Registered User

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    Yeah that's what I'm looking at but don't understand why it's anything other than perfect though. All parts are new!
     
  5. vag-tech

    vag-tech Site Sponsor Site Sponsor VCDS Map User

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    Your oil pressure may very well be perfect. The pressure switch or its circuit may be defective however, giving an erroneous warning.


    Sent from my iPhone using Tapatalk Pro
     
  6. slowcoach3

    slowcoach3 Registered User

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    Thank God for that, ran an oil pressure test and it came back perfect! So relieved. Remains to be seen whether or not a new switch will cure it but at least I now know it's not actually going to eat itself!!!
     
  7. JonnyDerv

    JonnyDerv Registered User

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    If it's not oil pick up pipe or oil pump, it's highly likely it's going to be oil pressure switch
     
  8. Essflee

    Essflee Registered User

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  9. slowcoach3

    slowcoach3 Registered User

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    Car ran 1.5 bar at idle and 4.25 bar @ 3k rev. As you have to remove the switch to do the test we fitted a new one. Had a lovely drive around with no flashing red oil light. Pleased this happened though as I had meant to replace the pick up as the car had sat for 3 years. It was pretty minging so pleased that's done and the pump is new too!
     
  10. vag-tech

    vag-tech Site Sponsor Site Sponsor VCDS Map User

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    Good result. Any other issues crop up, keep us posted.


    Sent from my iPhone using Tapatalk Pro
     
    slowcoach3 likes this.
  11. crzboy0223

    crzboy0223 Registered User

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    Hi ,A3 1.8t AUM, i want to put an oil pressure gauge , what do you suggest or what do i need for it , i want to tap.it to oil coller sender ai have in mind an RaidHp gauge, but i don.t know what to buy , any help would be appreciated.
    Thanks
     

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