What Causes Vehicle Body Vibration When Parking?
3 Answers
Parking vibration is caused by aging engine components. Here is relevant information: 1. Engine mount aging: This can cause vibration. Engine mounts belong to the engine's shock absorption system and are responsible for absorbing slight vibrations during engine operation. If there are issues with the engine mounts, these vibrations will transmit to the cabin, causing vibration when parking. 2. Solution: When the vehicle body vibrates in neutral gear while stationary, if you notice such vibration and prolonged sitting causes numbness, and the vibration lessens slightly when accelerating, with normal power during driving and no fault lights on the dashboard, you need to check whether the engine mount rubber pads have aging or cracking issues. If so, directly replacing them can solve the problem.
My old car has the same issue, shaking like sitting on a massage chair when idling. Most likely it's the engine mount rubber (the cushion under the engine) aging - practically unavoidable for cars over five years. Carbon buildup also plays tricks; a dirty throttle body causes unstable idle, and incorrect spark plug gaps make the engine cough-like shudder. Loose transmission mounts are even more noticeable, like wobbly table legs. Last time I even had broken exhaust hangers causing violent shaking. Don't delay - get it lifted at the shop for inspection. A throttle cleaning costs just around 100 yuan anyway.
I've researched parking vibration issues several times, and the most common cause is fuel system blockage. Carbon buildup in fuel injectors leads to uneven fuel supply, making the engine shake erratically. Poor fuel quality exacerbates this - try adding two bottles of fuel system cleaner. If ignition coils or spark plugs fail causing misfires, you'll feel electric-like vibrations through the steering wheel. For automatic transmissions, check the fluid - dirty fluid causes unstable power transfer. A friend's car once shook so badly it spilled drinks, turned out three engine mount bolts were loose. Don't attempt DIY fixes, have a mechanic scan for trouble codes for accurate diagnosis.
