Hi. I’m just heading for bayers on vacation. Ride a 2007 vivaro box car with a 2.0 liter diesel engine. Since the long autobahn ride especially and also quite easily sometimes before dwm vacation the following happens. At 2600 turns from the 4th gear the car jerks very briefly. Was really only easy to notice and not further relevant for me. However, when I was in the mountains in 6th gear at a little under load driving at 2600 turns, it jerked once s o correct and the motor control light with the stop light was on for about 2 seconds. Then went out again and could give again reasonable gas. I stayed then always under 2600 turns and had no problems. Also with the courses 1-3 is no jerk to feel. What can that be. Are now on vacation and then something like that. Please for help. Greetings