ECM goes on after 5 miles, no flash code, why?

- D
- Dave Helland
  
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posted
20 years ago

Wed, Aug 6, 2003 11:03 PM

1984 GL 1800 Wagon, US 49 state emissions controls. ECM dashlight goes on after approximately 5 miles of highway speeds, no flashing code at module below steering wheel. No apparent difference in drivability. Anybody care to hazard a guess? PCV? Oxygen Sensor? EGR? Bad connection somewhere?

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