The engine of Lexus ux models shakes, the reasons for this problem are complex: air flow meter, intake pressure sensor failure, excessive dirt accumulated in the intake pipe, air filter clogged, throttle valve, ignition system failure , the fuel system fails, the electronic control system fails, etc.
The engine shakes: 1. The electronic control system fails. The electronic control system mainly determines the optimum gasoline injection quantity and ignition advance angle according to the engine operating conditions and vehicle operating conditions. The system is mainly composed of sensors, actuators and ECU. If there is a deviation in the sensor data collected by the ECU, it will cause a deviation in ignition or fuel injection, and the engine will not work properly. 2. Failure of the fuel system: failure of the fuel supply pressure; 3. Failure of the intake system: excessive dirt on the throttle valve and intake pipe or clogging of the air filter, the cross-sectional area of the idle channel becomes smaller, and enters the cylinder 4. The ignition system fails: the spark plug will introduce high-voltage electricity into the combustion chamber of the engine, and generate electric sparks between the electrodes, thereby Ignite combustible mixture. If the spark plug electrode gap is not correct, carbon deposits or ablation on the spark plug electrode, cracks on the spark plug insulator, etc., the spark plug will not flash over or the spark energy will be weakened, resulting in poor combustion of the mixture, unbalanced engine power and engine Power; the core components of oil and ignition, the common failure of the control unit is the internal circuit damage or poor contact.
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