What Causes Vehicle Body Shaking at Low Speeds?
2 Answers
Vehicle body shaking at low speeds is caused by: 1. Wheel dynamic imbalance issues; 2. Hydraulic power unit imbalance. Slight vibration during low-speed driving is quite normal and can be improved by partially depressing the clutch. However, if the shaking is severe, it's necessary to inspect the ignition and fuel systems or clean the intake system. The throttle valve, which controls air intake into the engine, comes in two types: traditional cable-operated and electronic throttle. After entering the intake manifold, air mixes with gasoline to form combustible mixture for engine combustion. Connected to the air filter above and engine block below, the throttle valve is often referred to as the 'throat' of an automobile engine.
As an observer who frequently deals with car issues, I've noticed that body shaking at low speeds is quite common, usually caused by unbalanced tires or suspension failures. For example, during one repair experience, my car wobbled noticeably while driving slowly in the city—it turned out the front tires were severely deformed with unstable air pressure; the problem was immediately resolved after rebalancing. Other common causes include aging shock absorbers or worn-out drive shafts—especially when the shaking worsens during turns, which could indicate damaged drive shaft splines requiring replacement parts. I recommend starting the inspection with the tires: check air pressure, look for bulges or cracks; if that doesn't help, have a mechanic test the suspension. Ignoring this may accelerate part failures or even create hazards at high speeds. Regular maintenance is crucial, especially for vehicles that frequently drive on rough roads.
