NEED HELP Looking for info on testing COP, good ohm range

Drec

Original poster
Lifetime VIP Donor
Supporting Donor
Member
Jan 29, 2018
216
Yakima, Washington
2002 Envoy 4200 running badly. So I changed out the plugs and replaced three COP's. It is now running good.

My question is, I checked the ohms reading on all 6 existing COP's; which ran from 10 ohms to 196 ohms. The new COP's ran between 16-35 ohms. I looked for a chart, and haven't found anything. I would imagine that the COP with the 196 ohm reading, might be out of range, but I don't know.
 

TJBaker57

Member
Aug 16, 2015
2,906
Colorado
2002 Envoy 4200 running badly. So I changed out the plugs and replaced three COP's. It is now running good.

My question is, I checked the ohms reading on all 6 existing COP's; which ran from 10 ohms to 196 ohms. The new COP's ran between 16-35 ohms. I looked for a chart, and haven't found anything. I would imagine that the COP with the 196 ohm reading, might be out of range, but I don't know.
A few years ago I tested some used coils I had. Details seen here...

 

Forum Statistics

Threads
23,340
Posts
638,128
Members
18,548
Latest member
nadmak

Members Online