Erratic Idle, Goes away w/ AFM unplugged

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  • lckyrocket
    Wrencher
    • Jun 2009
    • 202

    #1

    Erratic Idle, Goes away w/ AFM unplugged

    When I start my car it revs up to 2200k rpm then will die, almost stall, then rev again, and so on and will keep doing it. When I unplug the AFM sensor it will start up and idle normally. What is the problem here?
  • Court M3
    R3V OG
    • Jan 2004
    • 6713

    #2
    Bad afm maybe?
    Continuous For Sale Thread
    323i s50

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    • nando
      Moderator
      • Nov 2003
      • 34827

      #3
      yeah, your car shouldn't run very well without the AFM. if it runs better unplugged, it's got issues.
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      Bimmerlabs

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