How often should the throttle be cleaned? Can I wash it myself?

The main pollution source of throttle valve is sludge produced when the engine is running, and the poor filtering effect of air filter element will be affected by dust. In general, dirty throttle has the greatest influence on idle speed. If the throttle is too dirty, the idle speed will be unstable, but it has no effect on fuel consumption. It's best not to wash the accelerator yourself, because many cars need to use a maintenance computer for matching learning after cleaning. If it doesn't match the engine, there will be problems such as high idle speed and instability, and improper cleaning will easily damage the throttle, which is not worth the candle.