What should I do if the idle speed of Tiida 08 is unstable?

According to the current situation of your car, the problem should be the idle speed control system, that is, the throttle is too dirty or the idle speed and ignition timing are beyond the standard range. The throttle valve is too dirty. Due to frequent starting, short-distance driving, low temperature and poor fuel combustion quality, there will be too much carbon and dirt in the throttle and the surrounding air intake, and the cross-sectional area of the air passage will change, which makes the control unit unable to accurately control the idle intake volume, the memory of idle value, the poor contact of the throttle control harness when the ignition switch is turned on, and the disassembly and assembly of the throttle. If the battery is parked for too long or the battery stack head is disconnected for too long, it will cause the engine control unit to store. Secondly, the replacement cycle of spark plugs is 65,438+10,000 kilometers, but it usually needs to be replaced after 80,000 kilometers. Factory spark plugs are recommended.

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