I have 2005 Dodge ram 1500 SLT 2wd, Quad cab, 4.7L. I just changed plugs out at 28,000 miles used autolite plat. spark plugs. Few days latter i am getting engine code P02035 (insuffient ionization secoundary circuit coil #2) I replaced coil, cleared computer still get the same code. It misses every now and then. Any thoughts what could be causing it ? The dodge dealer up here i wouldnt even take my lawn mower to them. Only other thing i can think of is bad wire to the coil or PCM failure, which can be expensive to change. I tried moving the wires to the coil around as it was running to see if i could get it to miss or pop a code, but no dice. Only pops code when driving around.

 

You moved the wires to the coils but did you swap coils around to different cylinders?

 

You can check the resistance of all the coils and compare them to each other. This will save you money rather than throwing it at new coils that aren't needed.

Did you check the plug gaps? I know the 4,7L's aren't as picky as hemi's, but Copper plugs is what Dodge tunes these trucks to.