This started after hurricane Mathew. Had been using car to charge my cell phone after the storm and that made my battery weak. Some how fan control module went, causing fan not to cut off. I disconnected the battery until I was able to get a new one. I finally get the car back together after 3 weeks and I am getting a strange idle sound and feel. I'm also getting a burping or popping sound back though the air box. No other symptoms. I haven't drove the car, but let it run for about 45mins. Checked for codes and I don't have any nor any pending. I don't know if I need to reset the TB. Now when I did connect the battery for the first time last week I got a strange code for fuel injector #7. I cleared it right after and it didn't come back. Readiness is not set for everything yet so don't know if that could be part of the issue. Before disconnecting the battery I had zero issues.