hello, I’ve already read through some answers, but I haven’t found the right one yet… it’s about the b caravan, 136 ps, gasoline, drove now some time in the rather high speed range in the empty run maybe 1100?, then after longer distance began the fluctuation between 1000 and 2000, exhaust gas smelled extremely bad, lambdasonde changed, was better at the cure, then longer test drive, which fluctuated again, llr changed, ran immediately deep, but at cold start giing the motor at the beginning again and again, about 3 min give light gas then worked and he commutes at 800 turns and drives very calmly, but now he goes after very short make up e.g. no more fuel, drags himself and then jumps about after 5-10 min wait again, but then the game with the time to give gas again starts again… what can I do?? love thanks for answers