Is it necessary to perform computer matching after cleaning the throttle valve?

When we accelerate, we actually control the throttle. By controlling the opening of the baffle in the throttle, we can control the intake volume and increase or decrease the engine speed. Carbon deposits on the throttle are inevitable. Trucks that often drive at low speeds need to be cleaned once every 20,000 kilometers, otherwise there will be sluggish acceleration and idle jitter. Cleaning the throttle is relatively simple. As long as you can remove the intake hose to expose the throttle, you can clean it yourself. Spray it with detergent and soak it, then wipe it gently with a soft cloth and it will be clean. 

But the throttle valve is not just cleaned. Some throttle valves may have some problems after being cleaned, and need to be re-matched by computer. Otherwise, it will cause abnormal operation of the vehicle. Why is this? Do all cars need to be matched? 

Not all models require matching. Cable-type throttles do not require matching, and a small number of electronic throttles do not require matching. However, the vast majority of electronic throttles require matching.

Let's first talk about why the electronic throttle needs to be matched. When the baffles in the electronic throttle are all closed, the intake passage will be completely closed, and no air can enter. Therefore, when the engine is running, its baffles are never completely closed. When idling, a small gap will be left to allow a small amount of air to enter. This is the minimum opening of the throttle. The amount of air that passes through this small gap at idle is certain, and it cannot be less or more, so as to ensure a smooth and normal idle speed.

At this time, you need to perform computer matching on the throttle, clear the memory of the automatic throttle adjustment, and restore it to its initial state, so that the idle speed can return to normal.

In addition, if you clean it yourself, you must clean it thoroughly. Otherwise it will cause the idling speed to be unstable.