1.8 the car excelle still has no power after cleaning the accelerator.

The lack of power is not necessarily a problem with the throttle. Look at spark plugs, oil pressure and the like, especially spark plugs and ignition wires. This is always broken because the valve cover loves to leak oil! The old problem with this car! If there is something wrong with the car, ask the car master. 4S shop professional technician, 10 minutes to solve.