ENGINE MISFIRE

  • Tiny
  • Steve Scholten
  • 2006 MERCURY MARQUIS
  • V8
  • 70,000 MILES

2006 grand marquis. Engine stumbles only when snow is in the air. No check engine defaults or codes. Otherwise it runs smoothly.

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Monday, January 10th, 2011 AT 1:02 AM

1 Reply

  • Tiny
  • Wrenchtech
  • EXPERT
  • 20,568 POSTS

It sounds like you have the beginning of a failing coil. When it gets worse the computer will identify which cylinder it is with the check engine light.

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Monday, January 10th, 2011 AT 1:35 AM

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