My 2007 Ford Expediation was missing intermittenly. I changed the plugs and now it runs worse then ever. Any ideas???

Asked by Mar 12, 2012 at 07:46 PM about the 2007 Ford Expedition XLT

Question type: Maintenance & Repair

I took it to Auto Zone and they used their machine to check and said that cylinder #4 was misfiring.  Then they said it had multiple misfires.  I even changed the coil on top of cylinder #4 and #1 which did no good.

3 Answers


There are a few things that could be the problem. The COP on these engines have always been a problem on the Pre 2005 engines. You couldhave gotten a bad coil. It does happen. I would have allthe coils tested for resistance. I would have all the boots visually looked at for damage. I would also replace all the plugs, and do a thurough tune up. I would also check the injectors. You could have one that is not fully opening or has been gummed up. You might want to go out and buy a coupe of cans of injector cleaner for the next 2 fill ups. You may need to replace and injector if it is acting up.

2 people found this helpful.

Take to Auto Zone or Advanced Auto Parts ask them to check it out with their reader. It should tell you which Coil Pack is bad. Could be a plug wire.

1 people found this helpful.

I have this EXACT problem right now!! Have you rectified it?? What have you found to be the problem??

2 people found this helpful.

Your Answer:


Looking for a Used Expedition in your area?

CarGurus has 22,351 nationwide Expedition listings starting at $1,000.


Ford Expedition Experts

  • #1
  • #2
    Larry Sturgis
  • #3
View All

Related Models For Sale

Used Chevrolet Tahoe
526 Great Deals out of 37,726 listings starting at $1,250
Used Ford Explorer
876 Great Deals out of 67,385 listings starting at $800
Used Chevrolet Suburban
331 Great Deals out of 22,499 listings starting at $1,999
Used Lincoln Navigator
74 Great Deals out of 4,179 listings starting at $1,995
Used Ford F-150
2,280 Great Deals out of 208,584 listings starting at $1,300
Used GMC Yukon
342 Great Deals out of 21,326 listings starting at $2,450
Used GMC Yukon XL
213 Great Deals out of 12,628 listings starting at $2,400
Used Cadillac Escalade
215 Great Deals out of 11,991 listings starting at $2,990
Used Nissan Armada
147 Great Deals out of 9,251 listings starting at $1,900
Used Toyota Sequoia
84 Great Deals out of 5,130 listings starting at $2,950
Used Dodge Durango
283 Great Deals out of 25,621 listings starting at $1,750
Used Ford F-250 Super Duty
493 Great Deals out of 40,208 listings starting at $2,800
Used GMC Acadia
448 Great Deals out of 33,057 listings starting at $3,500
Used Toyota 4Runner
259 Great Deals out of 34,260 listings starting at $1,995

Used Cars For Sale

2018 Ford Expedition XLT For Sale
2,196 listings starting at $41,676
2017 Ford Expedition XLT For Sale
5 Great Deals out of 409 listings starting at $21,991
2016 Ford Expedition XLT For Sale
4 Great Deals out of 106 listings starting at $18,991
2015 Ford Expedition XLT For Sale
94 listings starting at $18,310
2014 Ford Expedition XLT For Sale
8 Great Deals out of 85 listings starting at $14,982

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.