I replaced the plug wires the plugs and the coil pack on my 2004 ford sport trac adrenalin xlt and it misfires on cylinders 4 and 5 im puzzled can anyone give advise

Jay Chesk

Asked by Jul 20, 2016 at 01:21 PM about the 2004 Ford Explorer XLT Sport V6 4WD

Question type: Maintenance & Repair


4 Answers

Bob Beaman

Did it miss before you messed with it?


Do some simple checking. Use an HEI spark detector on each wire not firing and see if it fires the detector. Also, did you use Motorcraft wires? Fords are sometimes finicky when it comes to wires. Check the resistance of both wires on the offending cylinders and see if they are within Ford specs.

Bob Beaman

Double check to see if the plug wires are on the correct places on the coil and are routed to the proper spark plugs. It is easy to get them mixed up. Also make sure you understand which cylinder is which on the 4.0 engine as the manufactures use different cylinder labeling schemes.


Bob does have a point, which I forgot about, when servicing my daughter's 4.0 engine. Using Motorcraft wires for the tune-up I had to reassemble the wires connecting to the distributor in a certain fashion, as the wires were just long enough. Some wires, coming out of the clip which attaches to the coil, had to go over some wires and under others. The problem was the clip on the spark plug wire would not attach itself properly to the coil, causing a misfire. Check and make sure all the plug wires are properly clipped to the coil. If not, it will result in a misfire.

Your Answer

Add photo

Related Questions


Looking for a Used Explorer in your area?

CarGurus has 72,124 nationwide Explorer listings starting at $300.


Search Ford Explorer Questions

Ford Explorer Experts

#1 OJ
Reputation 8,430
#2 Tom Demyan
Tom Demyan
Reputation 3,340
#3 tennisshoes
Reputation 1,930
View All

Related Models For Sale

Used Ford Expedition"
596 Great Deals out of 21,557 listings starting at $2,111
Used Jeep Grand Cherokee"
1,201 Great Deals out of 74,214 listings starting at $1,500
Used Ford F-150"
3,253 Great Deals out of 217,198 listings starting at $1,000
Used Chevrolet Tahoe"
1,147 Great Deals out of 36,615 listings starting at $1,995
Used Ford Escape"
1,712 Great Deals out of 95,095 listings starting at $500
Used Dodge Durango"
401 Great Deals out of 22,815 listings starting at $1,700
Used Toyota 4Runner"
363 Great Deals out of 18,973 listings starting at $2,400
Used Toyota Highlander"
655 Great Deals out of 31,090 listings starting at $1,990
Used Honda Pilot"
573 Great Deals out of 19,670 listings starting at $1,800
Used Ford Explorer Sport Trac"
72 Great Deals out of 2,227 listings starting at $1,995
Used Nissan Pathfinder"
452 Great Deals out of 25,224 listings starting at $1,295
Used Ford Explorer Sport"
327 listings starting at $995

Used Cars For Sale

2017 Ford Explorer For Sale
5 Great Deals out of 35,122 listings starting at $24,075
2016 Ford Explorer For Sale
268 Great Deals out of 10,825 listings starting at $23,220
2015 Ford Explorer For Sale
149 Great Deals out of 3,336 listings starting at $12,995
2014 Ford Explorer For Sale
318 Great Deals out of 5,655 listings starting at $9,999
2013 Ford Explorer For Sale
329 Great Deals out of 5,414 listings starting at $9,300