jumping idle

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  • chriskb3
    Advanced Member
    • Jun 2004
    • 153

    #1

    jumping idle

    right from the start of the engine, the idle has a constant jump from about 500-1000 rpm. caused my a vaccum leak?
  • Gus
    Wrencher
    • Jan 2004
    • 285

    #2
    check the idle air mixture on the AFM, plus your idle control valve (black cylinder), the thing inside should move around freely. my same prob was the idle air mixture
    JUNGL3



    1990 "333i" Sport

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