i have 1.8 engine c-max Sometimes when standing on traffic lights or likewise the engine seems to have some problems. It is loosing power, rpm dial is jumping up and down and when reaching lowest position the battery symbol swithes on and sometimes it even shut down (the engine). I've been to the dealer and they have tested the engine and nothing seems to be wrong. They have tighten one groung wire and updated the software, but the problem is still there. I'm returning the car on this friday and I hope they will find the problem and fix it. any ideas? marko slovenia