I had this same problem and it was my throttle body it was kind of hard to pin point cuz there was never any codes.

 

Im not getting codes either... I've been told o2 or throttle body... I ordered an o2 today $79 TB is $350+ so I was praying for o2 but now more and more people are saying TB...

 

Well today I got the o2 and changed and issues have seemed to go away. I say seem because usually after i reset the codes it takes a few days to crap out again! Something my father in law pointed out is the old one looks like my plugs did after the seafoam treatment... And when I started to think about it these issues started about a week and 1/2 after i did seafoam not sure if related but something I was wondering!

Nasty Vs. New