1991 BMW 525 check engine light

1991 BMW 525
178,000 MILES • 6 CYL • 2WD • AUTOMATIC
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CJONES217
  • MEMBER
  • 2 POSTS
check engine light goes off and on, idles up and down
Apr 18, 2008 at 9:33 AM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
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CJONES217
  • MEMBER
  • 2 POSTS
[quote:48808b8850="cjones217"]Shakes or Wobbles problem
1991 BMW 525 6 cyl Two Wheel Drive Automatic 178000 miles
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check engine light goes off and on, idles up and down[/quote:48808b8850]
Apr 18, 2008 at 9:35 AM
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DOCHAGERTY
  • CAR REPAIR CONTRIBUTOR
  • 9,603 POSTS
Have you scanned the car for faults? This could be an oxygen sensor failing or failed or the idle air control valve might be dirty. Its all guesswork and since the check engine light is on there are stored faults, knowing what these faults are will help me to help you.
Apr 18, 2008 at 11:30 AM
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