Do you need to clean the throttle when the idle speed is high?

If the idle speed is high, you can try to clean the throttle, but you can't guarantee the normal idle speed after cleaning, because the reason for the high idle speed is not just the throttle.

The common causes of high idle speed of automobiles are stuck throttle, lax closing, idle speed control valve failure, water temperature sensor failure, air leakage in air intake system, etc. This needs to be checked and eliminated one by one in order to solve the problem of high idle speed.