What happened when the power light of Wuling Glory 6407B3 van was on and the speed was too high?

The power light of Wuling Glory 6407B3 van is on, and the speed is too high, which is caused by the failure of the engine water temperature sensor, the scale in the cooling system, the carbon deposition in the throttle and the failure of the engine computer. It is recommended to go to 4S shop for inspection and maintenance. When the temperature is high, the idle motor or throttle will be stuck. Clean the throttle and idle motor, and clean the fuel nozzle.

Rotational speed principle

There is a crankshaft speed sensor on the engine, which will send out a pulse signal with the rotation of the engine crankshaft, and some gasoline engines will take the ignition pulse signal. This signal is transmitted to the engine computer. After calculation, a control signal is output and transmitted to the tachometer. The rotating pointer of the stepping motor on the tachometer is directly installed on the rotating shaft of the stepping motor. The faster the engine speed, the more pulses are generated, and the greater the speed value displayed on the instrument.