How often does Peugeot 508 throttle have to be cleaned?

Peugeot 508 throttle is cleaned every 20,000-40,000 kilometers. However, the more frequent the better. Excessive cleaning will gradually clean off the special coating of the throttle chamber, and the inner chamber will lose the coating, which is more likely to cause greasy adhesion. The car should always pay attention to whether there are phenomena such as unstable idle speed, power attenuation and increased fuel consumption. If it does appear, it should be cleaned. The way to clean the throttle is: open the hood and find the throttle of the engine; Remove the air filter and intake pipe with a screwdriver, and unplug the electric socket on the throttle; After removing the screw, remove the throttle valve, and then block the air inlet of the engine with a dry rag to prevent dirt from entering the engine; Spray detergent on the accelerator to clean it.