Ok here goes....

2001 pathfinder se 3.5 L 4x4

190,000 miles

if I am at a stop light the car bucks, then when I go to take off it sputters to start going. then it will drive fine and then when driving at a regular pace it begins to buck again then the check engine light blinks.

-6 months ago I have the ignition coils changed.
-had new plugs installed
-o2 sensors are all new
-cats are hollowed out

I have no idea what is causing this. please help me