The epc light is on, the vehicle is shaking, and it is better after restarting.
There are many reasons why the epc light is on, and the most likely reason is the failure of the exhaust gas recirculation valve (EGR) of the automobile. The exhaust gas recirculation valve is stuck in the fully open position and cannot be completely closed. Vehicles will emit black smoke, accompanied by weak acceleration, unstable idle speed, increased fuel consumption and insufficient power. The general contracting fault light on the dashboard will light up.
In addition to the exhaust gas recirculation valve, there may be the following reasons:
1. The throttle body is dirty and has too much carbon deposit.
Dirty throttle is common because the throttle body is too dirty. This situation can only be solved by cleaning the throttle body and then re-matching. Damage to throttle control unit, engine control harness, accelerator pedal position sensor, crankcase ventilation system leakage, air intake system leakage, brake light switch failure and brake bulb ablation can also cause epc light to light up.
2. Air intake system failure, such as air leakage or blockage.
3. Abnormal cylinder pressure and poor working conditions.
4. The fuel selection is not up to standard.
5. If the engine is turned off due to improper operation, this indicator light will also light up, and it will go out after re-ignition, indicating that everything is normal.
6, occasionally fail, a false alarm.
How to deal with it: specifically, you need to go to a 4S shop or a professional garage in time to find out what the reason is. Only when the specific cause is determined can the symptoms be repaired. Million car purchase subsidy