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  1. R

    2005 Audi S4 / Random Misfires on Cylinders 1 & 3

    Neverfollow, did you solve this problem? Mine ended up being very strange - after sitting for months, on starting, the cam chain had skipped one tooth. No valve collision, but the problem was not diagnosable through VCDS or through compression testing - only by removing the valve cover at TDC...
  2. R

    00301 – ABS return flow pump (V39), Pump works, ECU is rebuilt, BRAKE light at 10 mph

    00301 – ABS return flow pump (V39) 35-00 - - Pump works, controller is rebuilt, BRAKE light comes on at 10 mph I’m stumped. The ABS rebuilder has graciously tested the ABS controller twice, and it works for them. Since rebuilding, it now exhibits a new error: 00301 – ABS return flow pump (V39)...
  3. R

    Misfire after aborted scan, ECU comm problems, 2005 S4 Cabriolet b6 8H BHF 4.2 V8

    While I was clearing fault codes in my 2005 S4 cabriolet, B6 8H BHF 4.2 V8, my laptop died. The engine started running rough after the scan, returning codes of: 4 Faults Found: 16684 - Random/Multiple Cylinder Misfire Detected P0300 - 001 - - MIL ON 16685 - Cylinder 1...