2004 Mercury Mountaineer Car Rough Idle P0401 Engine Code

2004 MERCURY MOUNTAINEER
120,000 MILES
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JHEUERMANN
  • MEMBER
  • 7 POSTS
Car has rough idle and p0401 engine code.
Dec 3, 2012 at 5:41 AM
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DOCFIXIT
  • ✓Experienced Mechanic
  • 18,828 POSTS
Most likely vacuum leak in DPFE suggest get professional help
Dec 4, 2012 at 12:46 PM
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