Honda 190 Throttle Position Sensor Low Voltage

The throttle valve is too dirty, the fuel injector has too much carbon, or there is something wrong with the engine foot.

The throttle valve is too dirty, and the fuel injector has too much carbon deposit. After a certain mileage, a dirty throttle will cause the throttle to be closed loosely or the idling stepping motor to be stuck. Both of these situations will lead to the engine idling too fast, and the carbon deposit generated by the engine during work will also cause the vehicle to shake.

If there is something wrong with the engine foot, these vibrations will be transmitted to the steering wheel and cab, causing idling jitter. When the automobile engine is idling, turning on the automobile electrical system is most likely to cause the vehicle to shake.