Dongfeng Xinfeng Lingzhibao throttle sensor 2 signal voltage is too high.

Main faults and causes of throttle position sensor

① Corrosion of joints, poor contact, low voltage or non-conduction make the engine easy to stall or difficult to start.

(2) The initial position is inaccurate, and the output voltage is high or low, resulting in unstable idle speed, high or low. When the initial voltage is too high, IDL is turned off, which makes IAC stop working, resulting in unstable idle speed. If there is no IDL in the starting acceleration, the OFF signal is output, which loses the ability of "asynchronous injection" and makes the starting acceleration performance of the vehicle worse. On the contrary, when the initial voltage is too low, IDL will continue to conduct for too long, and the fuel cut-off function will lead to driving.

(3) The coating is invalid, and the change of resistance leads to inaccurate output voltage, and the vehicle starts quickly and has poor acceleration.

(4) Too much carbon deposit on the throttle valve and improper closing will affect the output voltage and flow rate, resulting in inaccurate air-fuel ratio and unstable idle speed.