Why does the Audi A6 engine shake significantly when the air conditioning is turned on?
1 Answers
The most common reason for engine shaking when the air conditioning is turned on is a dirty throttle body, which affects the engine. If the air conditioning is turned on at this time, it will increase the engine idle speed, resulting in steering wheel vibration. Common causes are as follows: 1. Excessive carbon deposits: This could be due to severe carbon buildup inside the engine, causing idle vibration when the air conditioning is turned on. 2. Ignition system issues: If there is a problem with the vehicle's ignition system, it's necessary to check the spark plugs and high-voltage wires. Abnormal operation of the ignition system can lead to this situation, causing idle vibration. 3. Unstable fuel pressure: Unstable fuel pressure in the vehicle's fuel system can prevent the fuel pump from supplying fuel properly, leading to poor fuel atomization or failure to open the fuel injectors, resulting in idle vibration when the air conditioning is turned on.