What Causes the Car to Shake After Turning Off?

1 Answers
MaddoxRose
07/30/25 5:00am
The reasons for the car shaking after turning off are: 1. The engine throttle is too dirty or the fuel injector has excessive carbon deposits, causing the gasoline sprayed by the cold start injector to be largely absorbed by the carbon deposits, resulting in a lean mixture during cold starts and difficulty in starting; 2. Poor performance of the ignition system, including spark plugs, high-voltage wires, and ignition coils; 3. Abnormal fuel supply pressure, incorrect intake pressure values, and malfunctioning sensors. The solutions for the car shaking after turning off are: 1. Clean the fuel system and check the idle speed motor to remove carbon deposits; 2. Check if the spark plugs have excessive carbon deposits and replace them if necessary; 3. Check the fuel pressure and replace faulty components.
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