So...i Half Fixed My Idle Issue

[a1awind]

so i changed my O2 sensor and that really helped it but after doing all the crap to my mj that everyone told me (including cleaning the goop out of my c101.) it still idles rough.  it was running kinda smotth last night when i got home from dinner with friends. i stopped in the alley to take my sleeping daughter into the house before i pulled into the garage.  when i came back out it was idleing fine and then...for a split second it sputtered then almost died...then when right back to normal idle....wtf?

 

the way it idles when its warmed up is ....well....its wavy FEELING. like, you can feel a very fast wavy vibration (like brum brum brum brum) in the steering wheel when you are at idle. but it doesnt sound wavy.  seems to show up again at 55mph but that maybe a different issue...but it feels the same.

 

any thoughts? EGR? MAP?