Peugeot 2008 engine makes abnormal noise when the speed exceeds 3000 rpm.

Do four-wheel positioning and dynamic balance.

Car jitter, if not the quality problem of refueling, is mainly caused by dirty throttle and nozzle, or poor ignition of spark plug, or the idle oil valve needs to be adjusted and the oil circuit needs to be cleaned. If the owner solves the problem with the right medicine. It is suggested to go to the garage to check the fault code with a computer, and the mechanic will tell you what the problem is. The phenomenon you mentioned may be caused by the following aspects. 1, brake sensor problem, resulting in speed limit of driving computer, 2, air flow sensor problem. First of all, it is necessary to determine whether it is an engine fault or a gearbox fault. When driving, the engine speed can go up, but the speed can't keep up. Repair the gearbox and chassis. Otherwise check the engine. Don't change the subject until you are sure.