What Causes the Car to Shake When Accelerating but Stop When Releasing the Throttle?
2 Answers
The reasons why the car shakes when accelerating but stops when releasing the throttle are: 1. Excessive carbon deposits and low fuel pressure, leading to insufficient fuel supply and power, it is recommended to clean the fuel injectors and check the fuel pressure; 2. Poor ignition causing incomplete combustion, along with noticeably increased fuel consumption, it is advised to replace the spark plugs; 3. Insufficient cylinder pressure, which requires testing the cylinder pressure. Methods to reduce carbon deposits in the car include: 1. Regular car maintenance and oil changes; 2. Cleaning the car's air filter; 3. Regularly replacing the car's spark plugs; 4. Cleaning the car's throttle body; 5. Avoiding aggressive throttle inputs and minimizing sudden braking; 6. Regularly replacing the car's fuel filter.
Acceleration causes shaking but stops when releasing the throttle? I encountered this issue last year too. When driving above 60 km/h and pressing the accelerator harder, the steering wheel felt like it was dancing, but it stabilized immediately upon releasing the throttle. The mechanic said it's most likely a driveshaft issue, especially worn CV joints on front-wheel-drive cars, which commonly cause this problem. Another possibility you might not expect—excessive tire imbalance. Uneven centrifugal force during acceleration can lead to shaking. In my case, it turned out three balancing weights on the right front wheel had fallen off, and rebalancing fixed it. However, some car owners have experienced worn or cracked engine mounts, where engine movement during acceleration shakes the entire car. Don’t delay fixing these issues—a sudden driveshaft failure at high speed could be extremely dangerous.
