CHANGED THE CATALYTIC CONVERTER AND NOW MY CHECK...

  • Tiny
  • punchinella123
  • 2005 Mercury Marquis
  • 40,000 miles

Changed the catalytic converter and now my check engine light stays on

Thursday, November 8th, 2012 AT 7:35 PM

2 Answers

  • Tiny
  • Jacobandnickolas
  • Expert
  • 68,305 posts

If you haven't reset it, try that. If you did, check for new codes. Something may be wrong with an O2 sensor.

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Thursday, November 8th, 2012 AT 7:38 PM
  • Tiny
  • punchinella123
  • Member

Are you talking about resetting the computer? Is this done by disconecting the battery cable?

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Friday, November 9th, 2012 AT 2:11 PM

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