I'll try to provide as much info as possible to maybe eliminate other issue's.
I have a 97 TJ 4.0 5speed manual that seems to have a sputter while driving usually cold and not always happening. No code's what so ever, I had a professional try to find the issue and he could feel/hear it happening but after 3 day's couldn't find any trouble. So far I have cleaned the throttle body, added fuel injector cleaner, installed a new fuel pump, complete tune up plugs wires cap and rotor, changed the cam sensor, and the crank sensor.
Yet still having the problem and have no clue where to go from here. I have also tried unplugging the 1st O2 sensor.
Any help or thought would be greatly appreciated.