Noise and knocking in the suspension when the car is moving
| Cause of malfunction | Method of elimination |
| 1. The shock absorbers are faulty. | 1. Replace or repair shock absorbers. |
| 2. The bolts securing the anti-roll bar have become loose. | 2. Tighten the rod mounting bolts and nuts; if the rubber cushions wear out, replace them. |
| 3. Wear of rubber-metal hinges of levers. | 3. Replace the hinges. |
| 4. The shock absorber mounts have become loose or the rubber bushings of the shock absorber lugs have become worn out. | 4. Tighten the mounting bolts and nuts, replace the bushings in the shock absorber eye. |
| 5. Wear of the ball joints of the levers. | 5. Replace the ball joints. |
| 6. Increased clearance in wheel hub bearings. | 6. Adjust clearance or replace bearings. |
| 7. Large wheel imbalance. | 7. Balance the wheels. |
| 8. Deformation of wheel disks. | 8. Replace the discs. |
| 9. Settling or breakage of the spring. | 9. Replace the spring. |
| 10. Wear of rubber bushings of rear suspension rods. | 10. Replace bushings. |
| 11. Knocking noise from suspension "breakdown" due to destruction of buffers. | 11. Replace damaged buffers. |
| 12. Frequent breakdowns of the rear suspension due to overloading of the rear axle. | 12. Unload the rear of the vehicle. |
The front wheel alignment angles cannot be adjusted
| Cause of malfunction | Method of elimination |
| 1. Deformation of the axle of the lower arm or suspension arms. | 1. Replace the axle or arms. |
Vehicle deviation from straight-line motion
| Cause of malfunction | Method of elimination |
| 1. Different air pressure in tires. | 1. Set the tire pressure to normal. |
| 2. Violation of the front wheel alignment angles. | 2. Adjust the wheel alignment angles. |
| 3. Incorrect clearance in the front wheel bearings. | 3. Adjust the bearing clearance. |
| 4. The suspension arms are deformed. | 4. Replace the deformed levers. |
| 5. Uneven elasticity of suspension springs. | 5. Replace the spring that has lost its elasticity. |
| 6. Incomplete release of the wheel brake mechanism. | 6. Fix the problem. |
| 7. Significant difference in tire wear. | 7. Replace worn tires. |
| 8. Increased imbalance of the front wheels. | 8. Balance the wheels. |
| 9. Displacement of the rear axle due to deformation of the rear suspension rods. | 9. Straighten or replace the rods. |
Self-excited angular oscillation of the front wheels
| Cause of malfunction | Method of elimination |
| 1. The air pressure in the tires is not correct. | 1. Set the tire pressure to normal. |
| 2. Increased clearance in the front wheel hub bearings. | 2. Adjust the gap. |
| 3. The shock absorbers do not work. | 3. Replace shock absorbers or repair. |
| 4. The nuts securing the ball joint pins have become loose. | 4. Tighten the nuts. |
| 5. Violation of the front wheel alignment angles. | 5. Adjust the wheel alignment angles. |
| 6. Wear of rubber-metal hinges of lever axles. | 6. Replace the hinges. |
| 7. Large wheel imbalance. | 7. Check and balance the wheels. |
| 8. Wear of the ball joints of the levers. | 8. Replace the hinges. |
Frequent suspension breakdowns
| Cause of malfunction | Method of elimination |
| 1. Settling of suspension springs. | 1. Replace the springs with new ones. |
| 2. The shock absorbers do not work. | 2. Replace shock absorbers or repair. |
| 3. Deformation of the front suspension arms. | 3. Replace the deformed levers. |
Increased clearance in ball joints
| Cause of malfunction | Method of elimination |
| 1. Wear of the rubbing surfaces of the ball joint as a result of contamination caused by a leaky protective cover or its damage. | 1. Replace the ball joint and protective boot. |
Uneven tire tread wear
| Cause of malfunction | Method of elimination |
| 1. Increased speed on turns. | 1. Reduce speed. |
| 2. Significant wear of suspension joints and bushings. | 2. Repair the suspension. |
| 3. Wheel imbalance (the appearance of spots, evenly distributed around the circumference, on the outer tracks and, during prolonged driving with an unbalanced wheel, also on the central track). | 3. Balance the wheels. |
| 4. Uneven braking of the wheels. | 4. Adjust the brake system. |
| 5. The shock absorbers do not work. | 5. Replace or repair shock absorbers. |
| 6. The wheel camber angle is incorrect (wear of the inner tread tracks). | 6. Adjust the camber angle of the wheels. |
| 7. Low tire pressure (heavy wear on the edges of the tread). | 7. Set the pressure to normal. |
| 8. Increased air pressure in tires (high wear in the middle part of the tread). | 8. Set the pressure to normal. |
| 9. Front wheel alignment is too low (wear of the inner tread tracks). | 9. Adjust the wheel alignment. |
| 10. Increased front wheel alignment (wear of outer tread tracks). | 10. Adjust the wheel alignment. |
Wheel beating
| Cause of malfunction | Method of elimination |
| 1. Wheel imbalance: | |
| - uneven wear of the tread around the circumference; | - balance the wheels or replace them; |
| - displacement of balancing weights and tires during installation; | - balance the wheels; |
| - rim deformation; | - straighten the rim or replace it with a new one, balance the wheels; |
| - tire damage. | - replace the tire and balance the wheel. |
| 2. Increased clearance in wheel hub bearings. | 2. Adjust the gap. |
Fluid leaking from shock absorber
| Cause of malfunction | Method of elimination |
| 1. Wear or destruction of the rod seal. | 1. Replace the oil seal.' |
| 2. Foreign mechanical particles getting onto the sealing edges of the seal. | 2. Wash the shock absorber parts, replace or filter the fluid. |
| 3. Notches, scratches, scuffs on the rod, complete wear of the chrome coating. | 3. Replace worn or damaged piston rod and seal. |
| 4. Loosen the reservoir nut. | 4. Tighten the nut. |
| 5. Damage to the tank in the area of the sealing ring. | 5. Replace or repair the tank. |
| 6. Shrinkage or damage to the tank sealing ring. | 6. Replace the ring. |
| 7. Excessive amount of fluid in the shock absorber. | 7. Provide the required amount of liquid. |
Insufficient shock absorber resistance upon recoil
| Cause of malfunction | Method of elimination |
| 1. Leaky discharge valve or bypass valve. | 1. Replace damaged valve parts or repair them. |
| 2. Broken or stuck piston ring in the groove. | 2. Replace the ring or eliminate its sticking in the groove. |
| 3. Insufficient fluid due to leakage. | 3. Replace damaged parts and fill with liquid. |
| 4. Scoring on the piston or cylinder. | 4. Replace damaged parts, replace fluid. |
| 5. Wear of the guide bushing hole. | 5. Replace the guide bushing. |
| 6. The liquid is contaminated with mechanical impurities. | 6. Wash all parts, replace the liquid. |
| 7. Settling of the recoil valve spring. | 7. Replace the spring. |
Insufficient shock absorber resistance during compression stroke
| Cause of malfunction | Method of elimination |
| 1. Compression valve leakage. | 1. Replace damaged parts or repair them. |
| 2. Insufficient fluid due to leakage. | 2. Replace damaged parts and fill with liquid. |
| 3. Wear of the guide bushing and rod. | 3. Replace worn parts with new ones. |
| 4. The liquid is contaminated with mechanical impurities. | 4. Wash all parts, replace the liquid. |
| 5. Wear or destruction of compression valve discs. | 5. Replace damaged parts. |
Shock absorber knocks and squeaks
| Cause of malfunction | Method of elimination |
| 1. Wear of rubber bushings in the lugs. | 1. Replace bushings. |
| 2. Deformation of the casing as a result of impacts. | 2. Replace or repair the casing. |
| 3. Insufficient fluid due to leakage. | 3. Replace damaged parts, fill with liquid. |
| 4. Loosen the tank and piston nuts. | 4. Tighten the nuts. |
| 5. Seizure of the piston rod due to deformation of the cylinder, reservoir or piston rod. | 5. Replace or straighten the parts. |
| 6. Loosen the shock absorber mounting nuts. | 6. Tighten the nuts. |
| 7. Breakdown of shock absorber parts. | 7. Replace damaged parts with new ones. |
Increased tire tread wear
| Cause of malfunction | Method of elimination |
| 1. Driving at high speed. | 1. Choose your speed depending on the road conditions. |
| 2. Acceleration of the car too sharply. | 2. Avoid sudden acceleration. |
| 3. Frequent use of brakes. | 3. Use your brakes wisely |
| 4. Wheel alignment angles are incorrect. | 4. Adjust the angles. |
| 5. Increased clearance in the front wheel hub bearings. | 5. Adjust the gap. |
| 6. Overloading the vehicle. | 6. Do not exceed the permissible loads specified in the Operating Manual. |
| 7. The recommended wheel rotation was not performed. | 7. Rotate the wheels according to the operating instructions. |
Squealing tires on turns
| Cause of malfunction | Method of elimination |
| 1. Abnormal tire pressure. | 1. Bring your blood pressure back to normal. |
| 2. Incorrect installation of the front wheel angles. | 2. Set the corners. |
| 3. The suspension arms, cross member or front body elements are deformed. | 3. Replace deformed parts, straighten the front body elements. |
[The article is copied from the website: VAZBOOK.RU]