I have a 99 Ford Expedition that started running rough, checked the codes because it is showing check engine soon light, shows code for spark plug 4, took wire off put back on and erased the code

10

Asked by Aug 24, 2015 at 10:42 PM about the 1999 Ford Expedition

Question type: Maintenance & Repair

I typed too much before, I have a 99 Expedition. It started running rough after getting gas somewhere in a new state that apparently runs ethanol, wasnt aware, was showing check engine soon light, the code was for sparkplug 4, checked wires, unplugged replugged, erased code ran fine for a few days then started running rough again and pings like crazy on acceleration. Changed the fuel filter thinking maybe bad gas, put Lucas in it and is still running rough and is still throwing code, I cant afford to do alot or replace alot of parts, I could definitely use any help I can get

7 Answers

18,790

Sounds like you have a miss firing spark plug.

1 of 1 people found this helpful.
Best Answer
10

firebird338 can I just replace that spark plug? I know its not the best thing to do but right now I cant afford to replace all 8

18,790

Yes you can but also maybe the spark plug wire but you can try the plug first and if it does it again replace wire. Before replacing plug remove and take a good look at it if does not look that bad try cleaning and regapp plug.

2 of 2 people found this helpful.
10

i have no clue how to do that regapping thing. I either have to pay to have someone else do it or something I am able to do myself. The spark plug itself is only 5 bucks and maybe they will be nice to me at Oreillys and put it in for me? lol

18,790

If you are going to put in a new one most likely the gap has been preset from factory. Just recommended gaping if you were thinking about trying to reuse the old plug. The guy at the parts store can tell you if the plug has the correct gap already.

3 of 3 people found this helpful.
10

the man at the auto store was a little crabby when I didnt buy all 8. Thank you for the response.

18,790

Those guys at the parts store have no idea how to Work on vehicles all they know is how to sale parts most of them any way.

3 of 3 people found this helpful.

Your Answer

Add photo

Related Questions

Expedition

Looking for a Used Expedition in your area?

CarGurus has 24,828 nationwide Expedition listings starting at $1,150.

ZIP:

Search Ford Expedition Questions

Ford Expedition Experts

#1 T_S_T
T_S_T
Reputation 1,910
#2 Larry Sturgis
Larry Sturgis
Reputation 1,320
#3 lightGear
lightGear
Reputation 1,010
View All

Related Models For Sale

Used Chevrolet Tahoe
559 Great Deals out of 31,371 listings starting at $1,500
Used Ford Explorer
928 Great Deals out of 70,253 listings starting at $997
Used Chevrolet Suburban
300 Great Deals out of 19,514 listings starting at $1,800
Used Lincoln Navigator
103 Great Deals out of 5,837 listings starting at $1,900
Used Ford F-150
2,058 Great Deals out of 207,340 listings starting at $1,499
Used GMC Yukon
382 Great Deals out of 19,299 listings starting at $2,000
Used GMC Yukon XL
209 Great Deals out of 12,378 listings starting at $2,999
Used Cadillac Escalade
195 Great Deals out of 10,972 listings starting at $3,200
Used Ford Excursion
12 Great Deals out of 806 listings starting at $2,250
Used Dodge Durango
267 Great Deals out of 21,292 listings starting at $1,499
Used Ford F-250 Super Duty
328 Great Deals out of 46,262 listings starting at $1,450

Used Cars For Sale

2017 Ford Expedition For Sale
27 Great Deals out of 14,638 listings starting at $29,888
2016 Ford Expedition For Sale
125 Great Deals out of 2,145 listings starting at $23,999
2015 Ford Expedition For Sale
14 Great Deals out of 678 listings starting at $19,995
2014 Ford Expedition For Sale
43 Great Deals out of 751 listings starting at $17,850

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.