Why does the Audi A6's RPM drop when braking?
1 Answers
Throttle body has carbon deposits; cleaning the throttle body should resolve the issue. Throttle Body: It is a controllable valve that regulates the air entering the engine. After the air enters the intake manifold, it mixes with gasoline to form a combustible mixture. It connects to the air filter at the top and the engine block at the bottom, often referred to as the throat of the car engine. The throttle body is one of the most critical components in today's electronic fuel injection engine systems. The responsiveness of the car's acceleration is closely related to the cleanliness of the throttle body. Cleaning the throttle body can reduce fuel consumption and make the engine more agile and powerful. Precautions for cleaning the throttle body: The frequency of throttle body cleaning largely depends on driving habits and environmental conditions. If there are no symptoms such as unstable idling, engine shaking, significantly increased fuel consumption, or weak acceleration, cleaning is unnecessary. Cleaning should only be performed when these symptoms appear. After cleaning the throttle body, it is essential to use a diagnostic tool to perform data matching and reset the throttle opening angle. This is because the engine control unit (ECU) has memorized the opening angle with carbon deposits. If not reset, the engine may exhibit unstable idling and excessively high RPM.
