Question about 2000 Ford Expedition

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2000 Expedition running rough

Error code has something to do with #6 spark plug and coil

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  • Anonymous Mar 16, 2009

    Rear whipper stop working on my Expedition

  • tbourne06 Mar 29, 2009

    I pulled codes and found that both #2 and #5 were misfiring. I changed both spark plugs and coils. Still having the problem. I checked the PCV and it has suction. I heard that sometime the PCM needs to be reset to get fuel pumping to the injectors. Is this a good route to take?

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If can read codes out and says po306, would rec. replacing all spark plugs and that #6 coil.

Posted on Nov 15, 2008

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I wouldn't replace any of the spark plugs just the #6 coil, useless you have more than 100,000 miles. If you have to replace the spark plugs use BOSH double plautim or better. The cylinder placing is ( as your are looking at the front of the truck) passenger side front to back 1-2-3-4 driving side front to back 5-6-7-8. To replace the #6 you are going to have to take the air intake system off. The coil will be located under the fuel rail (if you never seen a coil buy one so you know what you are looking for). The coil is held in by a 7mm bolt. Take the bolt out and replace the coil. Problem Solved. Estimated time 20 mins with 60 dollars.

Posted on Mar 18, 2009

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2 Answers

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1 Answer

Have 2000 limited 4.7. Has engine light on and checked codes,says #3 & 6 misfire. changed coils. but still have light and runs rough at 65-69 mph. A little rough at stop.


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Misses during acceleration , rough acceleration, service engine soon light on, power loss, still runs fair, 2000 ford expedition


Go get the codes ran at auto zone or advance auto parts they will do it for free. If the codes come up as a cylinder miss-fire then it is most likely a coil (being a ford). Write down which cylinder it is. I wouldn't replace any of the spark plugs , useless you have more than 100,000 miles. If you have to replace the spark plugs use BOSH double plautim or better. The cylinder placing is ( as your are looking at the front of the truck) passenger side front to back 1-2-3-4 driving side front to back 5-6-7-8. If you never seen a coil buy one so you know what you are looking for. The coil is held in by a 7mm bolt. Take the bolt out and replace the coil. Problem Solved. Estimated time 20 Mins with 60 dollars per coil.

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