1 1 excelle 1.6 when driving automatically, the fault light is on and the acceleration is weak.

1 1 excelle 1.6 the reasons for the weak acceleration of the fault light during automatic driving are as follows:

1. air flow sensor failure: air flow sensor is one of the key components to control engine fuel supply. If it fails, it will lead to insufficient fuel supply and weak acceleration. In addition, the fault of the air flow sensor may also cause the fault light to light up.

2. Throttle position sensor failure: The throttle position sensor is responsible for monitoring the position of the accelerator pedal and telling the engine control module how much fuel should be provided. If the sensor fails, it will cause the engine control module to receive the wrong signal, which will lead to weak acceleration. Similarly, this may also cause the fault light to come on.

3. Fuel system failure: Fuel system failure may lead to insufficient fuel supply or improper fuel mixing, resulting in weak acceleration. These problems may be related to the fuel pump, fuel filter, fuel injector or fuel pressure regulator.