When a car shakes during acceleration, it can be caused by several common issues. These include unbalanced or uneven tires, worn-out spark plugs causing engine misfires, damaged inner CV joints, broken or bad motor mounts, bent axles or driveshafts, loose lug nuts, or problems with the transmission. Each of these factors can disrupt smooth engine operation or wheel balance, leading to noticeable vibrations while the car is accelerating.
Here is a brief overview of the main causes:
- Unbalanced or uneven tires : Tires not properly balanced or with uneven wear can cause vibrations, especially as speed increases.
- Worn spark plugs : These can cause engine misfires leading to shaking.
- Damaged CV joints : CV joints transfer power to the wheels and if damaged, they create shaking during acceleration.
- Broken motor mounts : Motor mounts secure the engine; if broken, engine vibrations increase and can shake the car.
- Bent axles or driveshaft : A bent axle or driveshaft from impacts can cause shaking that worsens with acceleration.
- Loose lug nuts or brake component issues : Loose wheels or stuck brake calipers can also cause vibrations.
- Transmission problems : Low fluid or worn parts in the transmission can cause shaking as well.
Diagnosing the exact cause typically involves inspecting tires for balance and condition, checking spark plugs and engine performance, examining axle and CV joints, motor mounts, wheel nuts, and potentially transmission fluid and components.
If these symptoms occur, it is recommended to get the vehicle checked by a mechanic promptly to avoid further damage and ensure safety.
This comprehensive view helps identify why the car shakes when accelerating and guides toward proper troubleshooting and repair.
