1990 BMW 535 poor idle check engine light on when idleing

1990 BMW 535
168,000 MILES • 6 CYL • 2WD • AUTOMATIC
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ANGUS714
  • MEMBER
  • 1 POST
This is an addition to me previous question.
Could it be the 02 sensor The spark plugs are clean
Jul 8, 2008 at 6:01 AM
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DOCHAGERTY
  • ✓Experienced Mechanic
  • 9,606 POSTS
The M-30 motor is somewhat sensitive to plug gap, valve lash, and throttle plate adjustment. When was the last inspection performed?
Jul 8, 2008 at 9:19 AM
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