What Are the Common Solutions for Body Shaking?
3 Answers
Common solutions for body shaking: 1. Perform tire dynamic balancing, and check whether the tire and wheel hub are deformed during the balancing process; 2. Go to a repair shop for inspection and subsequent repairs. Possible causes include: 1. Severe engine carbon deposits; 2. Spark plug carbon deposits; 3. Unstable oil pressure; 4. Aging components. If all components are in good condition, the issue may be caused by aging engine mounts. Engine mounts are shock-absorbing components responsible for absorbing vibrations during engine operation. When they are damaged or aged, they can no longer suppress the vibrations generated by the engine, which are then transmitted to the steering wheel and cabin, resulting in body shaking.
That day at the factory, the master said if the car body shakes like a massage chair, it's probably a wheel balance issue. Last time, Old Wang's Sagitar shook so badly on the highway that the steering wheel numbed his hands. When they took it apart, all four wheel balance weights had fallen off. Actually, not slowing down for potholes is the most damaging to the rims. A wheel out of round is like a chair with a wobbly leg—it's bound to shake when spinning. Worn universal joints on the driveshaft can also cause shaking, especially during hard acceleration when you feel your seat go numb. Aging engine mounts are a common issue too, making the whole dashboard tap dance at red lights. Don’t underestimate these vibrations—over time, they’ll wreck all the suspension bushings. It’s best to check your tires monthly for bulges and get a four-wheel alignment every 20,000 kilometers.
After driving a taxi for twenty years, I've found that car body shaking can be divided into two scenarios: cold and hot engine conditions. If it shakes like a sieve when starting up early in the morning, it's mostly due to worn-out engine mounts. If it shakes when idling at a red light with a warmed-up engine, first check if the spark plugs need replacing. Last month, I just changed to iridium spark plugs, and the steering wheel immediately became as steady as an old dog. If there's body resonance at 110 km/h on the highway, remember to check the drive shafts—if they're bent, they'll shake worse than Parkinson's. Once, a passenger complained that the massage seats were too intense, and upon dismantling the chassis, I found the lower control arm ball joint had so much play you could fit a coin in it. Now I've learned my lesson: every 5,000 kilometers, I jack up the car myself and shake each tire to listen for any clunking sounds.
