Go to start,it clicks,,turn back on it will start.then start driving and its misfiring at low RPM .pick up speed it sometimes goes away. Doesn't happenallthe time. Another thing if lights are they flicker. OBD2 states its misfire1234, did tuneup it ran fine . Then it started all over again.

 

Sounds like an IAC problem. Does it do it when you decelerate coming to a stop light?

 

Yes