What's wrong with the speed of the ninth-generation Accord D?

The reasons why the speed of the ninth-generation Accord D gear can't go up are as follows:

1. There is something wrong with the throttle valve. First check whether the throttle position sensor is normal, sometimes the fuel will tremble when it is lit.

2. The manual brake is not put down.

3, the engine cylinder is missing, the spark plug ignition is not good, just replace the spark plug.

4. There is a problem with one of the oil circuit, oil pump and gasoline grille. This problem is probably caused by the addition of inferior gasoline.