Cleaning the throttle on a regular basis, Prevention of high idle speed

If your car is for 5 years, about 80000 km, and the idle speed is high, you can check the car from following aspects:

1. Checking the engine vacuum tube is leaking or not, if leaking, please replace the vacuum tube.

2. Checking whether the engine fault light is shining, if find engine fault, please go to 4S shop and check the engine with computer test, confirm which parts cause the idle speed to be unstable, including sensor fault, engine combustion fault, valve position sensor failure etc.

3. Checking whether the throttle is very dirty, is there carbon in the throttle and idle motor? Dirty throttles can cause the throttle to close tightly and idle motor clamping stagnation, both of them can cause the engine idle to be too high.