AAN running rich in closed loop

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  • S4Marc
    S2Forum Enthusiast
    • Mar 2017
    • 108
    • Country: United Kingdom
    #1

    AAN running rich in closed loop

    I'm hoping for some direction in diagnosing my poorly running 1996 Ur S6

    It seems that when on closed loop the engine runs extremely rich and occasionally cuts out

    Which sensor does the car use predominantly to alter closed loop fueling? MAF?
    Tags: None
    • newsh
      S2Forum Obsessed
      • Aug 2003
      • 16226
      • Country: United Kingdom
      #2
      Maf and lambda but do a boost leak test first.
      Any codes?

      S2 Coupe 3B Project

      Ur quattro restoration

      S2 Avant

      Boost is the new rock and roll!
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