Coil Pack Resistance Tolerance | Ford Explorer Forums

  • Register Today It's free!

Coil Pack Resistance Tolerance

92exploder4dr

Member
Joined
February 6, 2012
Messages
47
Reaction score
1
City, State
Colorado
Year, Model & Trim Level
92 Explorer
OHV Coil Pack

Primary connector (the one off to the side) is listed as having a resistance range of 0.6 - 1.0 ohms. Mine is 1.1

The connectors the plug wires go are listed as having a resistance range of 6.5k - 11k ohms. Mine are all at 14.5k

So I am out of the tolerable range, how bad is this? Does this mean my sparks are weaker? Do I need a new coil pack?
 



Join the Elite Explorers for $20 each year or try it out for $5 a month.

Elite Explorer members see no advertisements, no banner ads, no double underlined links,.
Add an avatar, upload photo attachments, and more!
.





What was the temperature of the engine when you did
the resistance readings? If it was warm, you'll get
slightly higher readings than if it was at ambient
temp....
 






It was at full running temp (30 mile drive) ~ 2 hours before I tested it. I don't remember it being any warmer than anything else I was touching.

I know very little about anything relating to electricity. I have no clue if a 31% increase in resistance is a lot or not.
 






In my opinion electrical components do wear out.
Insulation breaks down over time, wires corrode,
minute shorts occur in coil windings, etc.

I'd have to say that a new coil pack, new plug wires
and plugs would be worthwhile. Especially in an
engine with higher mileage...
 






Thank you for your opinion on the matter!
 






I have just tested my coil pack and my primary resistance is 3.4 (spec range is .3 - 1.0 ohm) and secondary is 13.3k (spec range is 6.5k - 11k ohms)

I have read all over that it should be close to this range, but I'm not sure if this is still acceptable. Should I just replace for good measure?

My only concern is the primary resistance being over 3x the resistance it should be.
 






Featured Content

Back
Top