contact summit racing or a good shop that handles rad. the three core should be doing the job. have you checked themo stat, other part connected to your heating system. a 4 core i think is mainly for racing vehicle.
go with your first thought,and option 4. yes it can be a pain, but you can also be proud that you done job yourself. i am a stock man all the way. good luck and safe driving.
the champsion 7034 does have the same heat range as rc12lyc, but the 7034 is for the modern wrangler, and rc12lyc is for older wrangler. keep us post as i would like to know if those plug work as good as rc12lyl. thanks
I just learned something, I have never used pine-sol for auto parts, i done some research and it used often. thanks for infor. keep working with the idle slowly and i bet you will get it running right. thanks