Originally Posted by trufus
Dealing with this same issue myself. I tried resetting adaptations by unplugging the battery for a few hours before I took the car in, there was no effect on the misfires. When I took the car to the dealer a few weeks ago, they replaced the Bank 2 injectors under warranty. The engine is a lot smoother now at startup and idle, but the engine is still stumbling occasionally at cold AND warm idle.
I've seen a few threads around where many people have experienced this same issue. I'm taking it back in to the dealer tomorrow morning, we'll see what the SA says.
Maybe you need carbon cleaning on your intake valves?