What are the faults of the throttle position sensor?

1. Idle speed is too high or too low;

2. The idle speed is unstable, and the idle speed is easy to turn off;

3. When accelerating, the engine shakes;

4. Accelerate the reaction delay;

5. The engine appears intermittent jitter during operation.

Causes and solutions of fault of throttle position sensor;

1. Idle switch is short circuit or open circuit; The solution is to go to the 4s shop for repair.

2. Improper installation and adjustment; The solution is repositioning.

3. Poor contact of sliding contact of linear variable resistor. The solution is to replace the linear variable resistor.

The throttle position sensor is also called throttle opening sensor or throttle switch. Its main function is to detect whether the engine is idling or loaded, accelerating or decelerating. It is essentially a variable resistor and several switches installed on the throttle body.

The rotating shaft of the resistor is linked with the throttle valve, and there are two types: full open contact and idle contact. When the throttle is in the idle position, the idle contact is closed and the idle state signal is output to the computer. When the throttle valve is in other positions, the empty contact opens and outputs voltage signals at different angles relative to the throttle valve. The computer can identify the engine load according to the signal voltage value; According to the rising or falling rate of the signal voltage in a certain period of time, whether to accelerate or decelerate is identified. According to these working conditions, the computer corrects the fuel injection quantity or controls the fuel cut-off. Million car purchase subsidy