Ignition coil question.


Asked by Dec 01, 2014 at 07:44 PM about the 1999 Ford Explorer 4 Dr XLS SUV

Question type: Maintenance & Repair

99 explorer OHV engine.  Using an OHM meter on the coil's secondary I get 13.1 ohms
on banks 1 & 4 and banks 2 & 5.. That would indicate it is over as the repair manuel
states reading should be between 6.5 and 11.5 K Ohms.  The remaining bank is within
specs.  Does it need replacing, some say the 13.1 reading is OK.

1 Answer


I checked my coil (single coil application) a few months ago with a cheap multimeter and came out with a higher than allowable resistance. I then took my "Better" multimeter and checked it. With the better meter it came within specs. One thing, I personally would just pull the plugs on the questionable bank after a short time and if you're not getting full voltage from the coil, you'll see the plug a bit darker than it should be.

Your Answer

Add photo

Related Questions

Search Ford Explorer Questions

Ford Explorer Experts

#1 OJ
Reputation 8,430
#2 Tom Demyan
Tom Demyan
Reputation 3,350
#3 tennisshoes
Reputation 1,930
View All

Related Models For Sale

Used Ford Expedition"
576 Great Deals out of 21,508 listings starting at $2,111
Used Jeep Grand Cherokee"
1,160 Great Deals out of 73,680 listings starting at $1,500
Used Ford F-150"
3,161 Great Deals out of 216,438 listings starting at $1,000
Used Chevrolet Tahoe"
1,106 Great Deals out of 36,353 listings starting at $1,700
Used Dodge Durango"
393 Great Deals out of 22,705 listings starting at $1,000
Used Toyota 4Runner"
347 Great Deals out of 18,739 listings starting at $2,400
Used Nissan Pathfinder"
439 Great Deals out of 25,096 listings starting at $1,295

Used Cars For Sale

2017 Ford Explorer For Sale
6 Great Deals out of 34,955 listings starting at $20,371
2016 Ford Explorer For Sale
241 Great Deals out of 10,728 listings starting at $23,220
2015 Ford Explorer For Sale
145 Great Deals out of 3,315 listings starting at $12,995
2014 Ford Explorer For Sale
309 Great Deals out of 5,630 listings starting at $9,999
2013 Ford Explorer For Sale
324 Great Deals out of 5,401 listings starting at $9,300