2004 missing at 50-60 mph

2004 LINCOLN LS
60,000 MILES • 6 CYL • 2WD • AUTOMATIC
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ANDY WATKINS
  • MEMBER
  • 1 POST
Car will miss around 50-60 mph. If I floor board the gas petal it run great but if I do not it will miss around 50 to 60 mph, after that it runs fine.
Aug 17, 2008 at 11:08 PM
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MHPAUTOS
  • ✓ASE Certified Mechanic
  • 31,937 POSTS
  • ASE Certified Mechanic
Hi there,

this may be a spark plug breaking down under load, do the tune up first and get a run on an oscilloscope as this will give all the ignition voltages and will be a good guide to locate a fault in an individual cylinder.

Mark (mhpautos)
Aug 17, 2008 at 11:13 PM
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