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Thread: Really stuck on running rich problem

  1. #26
    Join Date
    May 2014
    Location
    Aurora,Co
    Posts
    72
    My Cars
    1986 635csi 2001 530i
    All good points, thanks
    Have replaced injectors with rebuilt flowed ones, all 6 plugs all look the same when pulled.
    Am tried 3 different O2 sensors , all correct, no change.
    Have discoed O2 sensors many times when trying to tune with AFM, car runs the same.
    Will look at order of fuel control sensors.
    Will try another battery disco and cable grounding.

  2. #27
    Join Date
    Dec 2005
    Location
    Melbourne, Australia
    Posts
    1,753
    My Cars
    M3evo-Twin Screw/M635csi
    I can’t emphasise enough to install a wideband and air/ fuel gauge. It will take most of the guessing game away.
    BMWs
    74 2002 2.3ltr
    84 E24 M635csi
    86 E23 735i
    94 E34 540i/6 SC 14psi
    97 E36 M3 euro SC

    OTHERS
    02 Landrover D2 td5, 08 Holden Ute 6.0, 11 Audi S5 APR


  3. #28
    Join Date
    May 2014
    Location
    Aurora,Co
    Posts
    72
    My Cars
    1986 635csi 2001 530i
    The air/fuel gauge does look tempting.
    I rarely drive the car, maybe 2000/year and I have to look at maybe a new exhaust.
    I'll be looking at some other things as soon as it gets below 95 degs here in Colorado.

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