How to determine whether the throttle position sensor is broken or the idle motor is broken?

1. Determine whether the throttle position sensor is damaged or the idle motor is damaged:

1, the general throttle idle motor is broken, which will lead to unstable idle speed or flameout after large throttle;

2. The accelerator position sensor is broken, which will generally affect emergency refueling.

Solution: Make sure that the sensor or idling motor is broken, and you can only replace it with a new one.

Second, distinguish between throttle position sensor and idle motor:

1, throttle position sensor is also called throttle opening sensor; The scientific name of idle motor is stepping motor.

2. The throttle position sensor, also known as the throttle opening sensor or throttle switch, is a device for detecting the engine state. Its main function is to detect whether the engine is in idle or load condition, acceleration or deceleration condition. It is essentially a variable resistor and several switches installed on the throttle body.