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idle hunt

  1. Idle Limp Mode

    E60 M5 and E61 M5 Touring Discussion
    Hello all, So I went searching on the forum and couldn't find anything specific to my issue, so I figured I would start a thread and see if anyone has any input/feedback. I'll make a long story short: My dad and I rebuilt a motor that had a spun bearing/scored journal on crank. We have gotten...
  2. MAFs Appear Shot: Next Steps

    E39 M5 and E52 Z8 Discussion
    I have been trouble shooting rough idle / B2 B3 AE AF / touchy throttle problems since I bought my car. After a VANOS O-ring refresh, valve cover gaskets (redid the job and they now appear perfectly seated), I still had touchy throttle and B2, B3 codes. I figured the B2, B3 could be lingering...