Sudden low rpm rough idle

The last two weeks my trucks been sitting rather low on the rpm's at idle and it's never done that. It sits at about 600rpm-700rpm and is very rough.
I have a 2009 TRD prerunner with 102k miles on the clock.

If I give it a little gas while it's rough at idle and let it sit at 1k'ish rpm it's still rough. But then other times it will sit at 800-1k rpm and be smooth as a baby's butt. Idk wtf is going on.

 

Sitting around 6-700 is normal. Maybe just a bad tank of gas? Spark plugs need changing?

 

Yea it's only about 1 or 2 hundred rpm lower than usual but it's rough as hell. I'll let the gas get used in it and run it past E before I pull plugs. I put irridium plugs in it at 85k miles.

 

When was the last time you clean the, throttle body? I assume your air filter is clean, and you have no disconnected or crack vacuum lines. https://www.youtube.com/watch?v=41yFXjibtLY

 

I have a cold air intake, I checked it and everything looks proper

 

Are you using a dry type air filter? Try cleaning your MAF sensor.

 

Yep.
Like air the connections out?

 

https://www.youtube.com/watch?v=_TO7ZC5N-aA https://www.youtube.com/watch?v=ez5ykPAMG8k