These codes recently popped up. With them came rough running engine, loss of power and lots of extra engine noise. The engine noise is an intermittant ticking and sounds almost like a backfire inside the engine. I replaced the coils, re-set the codes, and they have not come back on, but the rough running engine, and the extra engine noise has not gone away.
I was hoping this would be an easy, or at least quick fix (ie replace coils and that would fix it) What else should I try....

Help Please

thanks

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What could be better than Liberty & Freedom???? Driving a Jeep that is Both!?!?!
2003 4x4 Freedom Edition. 93Kmi. Added: front tow hooks, trailer hitch, EVIC.