2000 Mercury Marquis misfire

Tiny
WAYNE EASLEY
  • MEMBER
  • 2000 MERCURY MARQUIS
  • V8
  • 2WD
  • AUTOMATIC
  • 128,000 MILES
Periodically the engine misfires when letting up the accelerator part way it never misses when accelerating hard. Have replaced plugs, boots, EGR valve and sensor, Crank position sensor and had fuel pressure checked. Replaced fuel filter and tranny fluid. Its driving me nuts. Please help! Thanks!
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Tuesday, September 21st, 2010 AT 8:39 PM

1 Reply

Tiny
RASMATAZ
  • MEMBER
Clean and test the idle air control valve and the MAF sensor
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Tuesday, September 21st, 2010 AT 10:24 PM

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