What is the reason for the Audi Q5 shaking after ignition and then disappearing after a while?

[Vincent]

Audi Q5 shaking after ignition and then disappearing after a while may be caused by the following reasons: Severe engine carbon deposits: The most common cause of car shaking is a dirty throttle valve or excessive carbon deposits in the fuel injectors. When there is too much carbon deposit inside the engine, the gasoline sprayed by the cold start injector will be largely absorbed by the carbon deposits, resulting in an overly lean mixture during cold starts, making it difficult to start and causing shaking. Ignition system issues: Check the working condition of the spark plugs, high-voltage wires, and ignition coils. Poor performance of the ignition system or spark plugs can also lead to such fault symptoms. Unstable oil pressure: It is recommended to check whether the fuel supply pressure and intake pressure sensor are normal. If the fuel pump supply pressure is abnormal or the intake pressure sensor values are incorrect or not working properly, it can cause body shaking.