Why does the engine automatically increase fuel?

[RobertLynn]

Reasons for the engine automatically increasing fuel: cold start of the car, dirty throttle, and electronic control interference. Cold start of the car: All vehicles have high idle speed during cold starts. This is an instruction issued by the computer based on data transmitted from various sensors on the vehicle, aiming to allow the engine to reach normal temperature quickly to ensure smooth operation. Dirty throttle: A severely dirty throttle with carbon buildup may cause unstable idle control and occasional automatic engine speed increases. Solution: Clean the throttle. Electronic control interference: Electromagnetic interference in the electronic control part can affect the output voltage signal of the accelerator pedal, leading to unstable signals and thus affecting engine speed control. Solution: Repair the electronic control part and stay away from interference.