Vehicle Chassis Loose with Rattling Noise

[NathanLynn]

Reasons and solutions for a loose vehicle chassis with rattling noise are as follows: 1. Ball joint wear or ball joint screw loosening: Fault inspection: Lift the vehicle and gently shake the tire to check the gap size, or use a pry bar to inspect the gaps and looseness of each ball joint. Solution: Tighten the bolts, replace new connecting rods, ball joints, etc. 2. Control arm rubber buffer aging or damage: Fault inspection: Use a pry bar to check each buffer rubber for cracks or aging. Solution: Replace new swing arm buffer rubber or a new swing arm assembly. 3. Shock absorber oil leakage or damage: Fault inspection: Check the shock absorber for signs of oil leakage, press down on the four corners of the vehicle to check the body's bounce and any abnormal noises. Solution: Replace the shock absorber. 4. Top mount rubber or thrust bearing noise: Fault inspection: Listen for noises while turning the steering wheel in place or when the vehicle is lifted. Solution: Replace the top mount rubber or thrust bearing, or add lubricating grease. 5. Stabilizer bar bushing noise: Fault inspection: Check both sides of the bushing for clean wear marks, some may be hard to detect, usually resolved by cleaning or replacement. Solution: Replace the stabilizer bar bushing.