What is the problem when the car shakes violently when shifting gears?

[FelicityRose]

If it is a slight shake, it is a normal phenomenon. If the shaking is severe, it may be due to severe carbon buildup. Here is the relevant information: 1. Reasons for car shaking: Car shaking can occur during startup, idling, and high-speed driving. Shaking during startup is mainly caused by insufficient fuel combustion, resulting in insufficient power and low ignition energy. During startup, especially when the temperature of fuel and lubricating oil is low, more throttle is needed to meet the power demand. The gap between the spark plug electrodes gradually increases, leading to decreased ignition energy and poor fuel atomization. 2. Introduction to car idling shaking: There are many reasons for car shaking during cold starts and hot starts. In addition to insufficient fuel combustion, it may also be due to abnormal engine water temperature, low cylinder pressure, clogged fuel injectors, etc. If the car shakes during startup, it is recommended that the owner promptly take it to a 4S shop for inspection and repair.

[OPenelope]

Having driven manual transmission cars for over twenty years, my experience with shaky gear shifts tells me that the most common issues are loose or worn engine mounts. When those rubber pads age, they transmit vibrations to the transmission. If the mounts are cracked or broken, the entire car shakes noticeably when shifting gears. Secondly, improper clutch adjustment or worn clutch discs can also cause rough gear engagement, especially during low-speed starts. It could also be due to loose transmission mount bolts or an unbalanced drivetrain. If left unrepaired, the shaking will accelerate damage to other components, leading to higher repair costs. I recommend checking the engine mounts and clutch condition as soon as possible and visiting a repair shop for adjustments. Pay attention to unusual noises or vibrations during daily driving, as timely maintenance can prevent these issues.

[SawyerMarie]

My new car started experiencing gear shifting vibrations after just six months of driving. After checking, it turned out the transmission mount was damaged, causing uneven power transfer. The issue was resolved after replacing the part at the repair shop. Additionally, worn-out or improperly installed clutch discs can also be a cause, especially noticeable during initial acceleration. For automatic transmissions, insufficient or contaminated transmission fluid might trigger the problem. Severe vibrations make driving uncomfortable and increase safety risks. It's advisable not to delay repairs—conduct a simple inspection under the car or in the engine bay for any abnormalities. Regular oil changes and transmission maintenance can help prevent such issues.

[LondynLynn]

A while ago, my car shook violently when shifting gears. A friend helped check and found that the engine mount was cracked, causing the vibrations to spread. It could also be due to faulty spark plugs or ignition system issues making the engine unstable, indirectly affecting gear shifting. Severe shaking can impact driving comfort and even increase braking distance. I got it repaired immediately, and now it's much better. It's advisable to pay attention to changes in the car's condition and fix issues early to avoid bigger problems.