How about this. You have read everything in this thread and done every test listed.

Start a new thread and list just that.....done this with that result, ect. Please be sure to give the exact year model of your Accord. I'm willing to bet we can figure it out

To answer your question. Yes a "lazy" O2 can cause issues without setting a code......

 

i'm reading this, sounds like my problem, except, i just started to get the stumble.......... is there a special tool to take off this 02 sensor??