Strange Idle issue. Low idle

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  • WidowmakerS2
    S2Forum Addict
    • Oct 2007
    • 354
    • Current: Norway

    #1

    Strange Idle issue. Low idle

    My 3b idles at 600 rpm when warm, about 850 when cold. Can't seem to find out whats going on. Car runs fine, but can stall at intersections if im up on the revs before clutching.

    -Checked for leaks, not in the PCV/breather system
    -Tightened every single clamp



    Weird thing is it did exactly the same with the 7A in the same car, after changing the engine mounts. Not likely related, but weird.
    If at first you don't succeed, destroy all evidence that you tried.

    -CQ 3b "S2".
  • ManiacuV6
    S2Forum Addict
    • Dec 2009
    • 458
    • Country: Romania

    #2
    Did you checked the ISV ?
    Audi S4 2.2T 5 spd 1992 for parts
    AUDI A4 1.9TDI daily use

    Audi 80 Quattro 2.0 16V (ACE) aka Competition

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    • UrS4boy
      S2Forum Obsessed
      • Feb 2006
      • 11859
      • Country: Canada

      #3
      Link to Engine Bay Device Map Info

      Go to the link below. Click on it and then click on N71 Idle Stabilization Valve. Your's sounds disconnected or dirty. (NOTE: All the other labels are live hyperlinks too)

      RS2'd 93 UrS4 5 spd sedan
      94 UrS4 V8 6 spd manual avant

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