I suspect that my car was tampered with by the 4S shop. I finished the maintenance on the afternoon of October 8th, 65438/KLOC-0. /kloc-got on the bus on October 9, and found that the idle speed was u

I suspect that my car was tampered with by the 4S shop. I finished the maintenance on the afternoon of October 8th, 65438/KLOC-0. /kloc-got on the bus on October 9, and found that the idle speed was unstable, the body was shaking, and the engine fault light was on. I suspect that my car was tampered with by the 4S shop. I finished the maintenance on the afternoon of October 8th, 65438/KLOC-0. /kloc-got on the bus on October 9, and found that the idling speed was unstable, the body was shaking, the engine fault light was on, and the combustion was not good. The parts fault repair shop has confirmed it for you. Now I should check from the soft fault oil circuit, and the cleaning oil circuit will probably return to normal idle speed. In fact, low idle speed is caused by poor combustion, and poor combustion is caused by unclean oil circuit. You can try to clean the oil circuit with company/general fuel cleaner. Generally, this problem will be solved with a high probability after adding two boxes of oil.