Hello together, our Adam doesn’t even have problems Opel know more maybe you know more ? If you’re in 4 gear and have 100 km/h and there’s nothing going very slowly up to 120 km/h and then it runs normally up to 140 km/h and then against stop nothing goes up to 150 km/h and against a jerking and runs again full through what is the ? ignition coil, spark plugs, air quantity meter new.