Oil pressure light??

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  • KRIMZONQUATTRO
    S2Forum Buff
    • Jan 2011
    • 32
    • Country: United Kingdom

    #1

    Oil pressure light??

    Hey folks,

    Gota strange issue at the moment if you could possibly help.

    The Red oil light comes on at just over 2000rpm on my A80Q 2.8V6.
    The engine had a top end rebuild about 3 months ago and was done properly so no blockages etc.
    Oil level is just below Max mark.
    I checked the breather pipes and they are clean as a whistle so I don't think the pressure has risen enough to cause oil to flow up through to them.
    If I drive really gently and changing up through the gears at around 2000rpm then light doesn't come on no matter how fast I go...but eventually (in 5th) to go even faster you gota go above 2000rpm....then light comes on...and beeps at me.....but does go out when dropping below 2000rpm.

    Engine still pulls really well. There's no difference between power since I've had it.....to be fair this car has surpised me as most people say these engines arn't high revving....well I think this was has identity issues.

    There's No leaks anywhere.

    Just after doing the top end rebuild I did a 200mile round trip to cornwall and back without issues.....but then she got laid up for about two months. The first drive after that the light came on at said Rev.....

    Is that light for pressure or temp or both...although this engine has never had tempreture problems....and always stays just under the 90C mark on the gauge.

    Sorry for the the long winded explaination...

    Hope you can help.

    Regards
    Jay
  • benntenn67
    S2Forum Maniac
    • Jun 2009
    • 859
    • Country: England

    #2
    Oil pressure light??

    Hi, Think I would try a new oil pressure switch 1st off ???
    Audi S2 Coupe 1995
    VW Passat GL5 (hatch) 1986
    VW Passat GL 1.8 (saloon) 1986
    Carrera Subway 8

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    • AndyP
      S2Forum Zealot
      • Feb 2004
      • 6049
      • Country: England

      #3
      Not sure about the V6 but the S2 has a pressure switch that must have a min 1.8bar at 1800rpm, if not, it sets off the autocheck alarm. The V6 may have something similar, if the wire is broken or not connected it will alarm.
      sigpic
      1991 Audi S2 3B - 2.5 Stroker engine
      1997 A6 2.5TDi quattro avant - C4
      1976 RD250E / 350LC cafe racer

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      • KRIMZONQUATTRO
        S2Forum Buff
        • Jan 2011
        • 32
        • Country: United Kingdom

        #4
        Originally posted by benntenn67
        Hi, Think I would try a new oil pressure switch 1st off ???
        Ahhh...I like your style...but......where is the switch.

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        • mcandmar
          S2Forum Zealot
          • Apr 2004
          • 5118
          • Country: Ireland

          #5
          Looking in the parts system the two pressure sensors are mounted just above the oil filter. This thread may be of interest to you http://www.s2forum.com/forum/showthread.php?t=46135
          91CQ20v - Gone to a new home
          93UR-S4 - The Magic Carpet
          94S2Bus - The Emerald Express

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