Kangoo Ruckelt after start / goes off – bin Ratlos

Hello, my BJ06 Kangoo somehow spins. This year was my first winter with him. When it started to get colder he always jerked after letting on. In the summer when it was really warm he didn’t do this. So you let him on and he jerks and runs somehow restless, whom you drive and step on the clutch within the first 1000-2000 meters, without giving gas, he actually always goes out. Who I just lightly give up the whole time standing gas don’t dan. I was already at ATU, who have g I couldn’t show you that jerking because he was warm. They just said that he was so cool and they could now look blindly for the mistake but that would be quite expensive, of course, because they didn’t see the mistake. Who he ran warm then he runs wonderful. What can that be? What can I do there?