Installed 2nd pre-owned accelerator pedal. Finally cleared fault code on that. Also installed new post-cat O2 sensor #1 to clear those faults. Surprisingly, the O2 sensor came out a lot easier that I expected, considering the difficulty some others have experienced. Other than those issues, still going strong at 164k.

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"If it ain't broke, fix it 'till it is"
'02 X5 3.0i, build date 02/2002, 135k, stock (for now)