Chery Fengyun 2 has unstable idle speed.

According to your analysis, firstly, I suggest you check whether there is too much carbon deposit in the idle motor, throttle, combustion chamber, intake pipe and fuel nozzle. Because on the one hand, these carbon deposits will make the pipe wall of the intake pipe rough, and the intake air will produce eddy currents in these rough places, which will affect the intake effect and the quality of the oil-gas mixture. When the combustion chamber is cold-started, excessive carbon deposits will adsorb some mixed gases. On the other hand, these carbon deposits will also block the idle passage, making the idle control device stuck or beyond its adjustment range, causing various auxiliary devices to fail, leading to engine jitter, idle speed increase, excessive exhaust volume and increased fuel consumption.

Second, if the abs light and the handbrake light are on at the same time, I suggest you check whether the speed sensors and abs pumps of the four wheels are faulty. At the same time, check whether the brake oil is insufficient.

It is recommended that you check according to the above situation.

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