Vibrating or Car shakes when accelerating is one of the more common problems people face. Generally, this problem occurs at low speed or on acceleration when the car is idle. This problem might seem like a very small issue but it can be an indication of a bigger problem coming ahead. Here we have mentioned a few reasons why you might be facing this problem.
Causes of shaking car when accelerating
Broken motor mounts
The primary function of motor mounts is to secure a car’s engine to the vehicle’s frame. A secondary aim is to dampen or lessen engine vibration so that the car’s occupants are not affected by the engine’s incessant shaking or trembling while it is running.
The vibrations are absorbed by the engine mounts, which are made of a firm rubber material. When a motor mount is damaged or cracked, it not only causes excessive vibration in the car, but it also causes other sections of the engine to become misaligned and eventually break since the engine is no longer in its proper location.
When the engine is idling, you will be able to sense a damaged motor mount, but the shaking will become more noticeable as the engine works harder. The vibrations should be reduced if a defective motor mount is replaced.
Deformed driver shaft
The driveshaft transmits power from the engine to the rear axle and connected wheels in a rear-wheel-drive vehicle (or propeller shaft).
As a result, if the driveshaft is even slightly bent or damaged (typically as a result of an accident), the car may shake when accelerating at low speeds and will get worse as you accelerate faster. A driveshaft can’t usually be repaired, thus the only choice is to replace it.
If you hit a curb, hit a large rock, or have a little accident, don’t think everything is fine just because there isn’t any obvious damage. It’s possible that the incident bent an axle, which might be dangerous.
You will begin to notice vibrations coming from the vehicle, which will worsen as you accelerate. A bent axle, like a bent driveshaft, must be replaced right away to avoid more damage.
Old spark plugs
The engine can misfire if the spark plugs are filthy or fouled. While the problem is most noticeable while the automobile is stopped, it can also cause the car to vibrate while travelling.
If you can’t recall the last time you changed your spark plugs, it’s probably time. If you take one out and observe a lot of dark accumulation on the tip, the rest of your spark plugs are probably faulty as well.
Unbalanced tyres may be the cause of your car shaking when driving if you recently had new tyres put on. When a tyre is put on a wheel, the weight of the tyre will never be the same all the way around.
To correct this, a tyre installer may place the tyre and wheel assembly on a balancing machine and apply small wheel weights to the rim at certain spots to achieve perfect balance. Any tiny weight imbalance will cause a small vibration while the tyre rotates.
The vibration will be more obvious at higher speeds when the tyre is rotating much quicker, and your steering wheel will actually shake. You may have an imbalanced tyre if your automobile rattles at a constant speed and becomes worse at higher speeds (s). One of the sticky wheel weights may have also fallen off. Simply take your car back to the tyre shop and have the tyres rebalanced.
Also check what to do when car is not starting but making clicking sound.