General Diagnosis
GENERAL DIAGNOSIS
| Condition | Possible Cause | Correction |
|---|---|---|
| Vehicle Pulls | Mismatched or uneven tires. | Replace tire. |
| Tires not adequately inflated. | Adjust tire pressure. | |
| Broken or sagging springs. | Replace spring. | |
| Radial tire lateral force. | Replace tire. | |
| Improper wheel alignment. | Adjust wheel alignment. | |
| Brake dragging in one wheel. | Repair brake. | |
| Loose, bent or broken front or rear suspension parts. | Tighten or replace the appropriate suspension part (s). | |
| Faulty shock absorbers. | Replace shock absorber. | |
| Parts in power steering valve defective. | Replace power steering unit. | |
| Abnormal or Excessive Tire Wear | Sagging or broken spring. | Replace spring. |
| Tire out of balance. | Balance or replace tire. | |
| Improper wheel alignment. | Check front end alignment. | |
| Faulty shock absorber. | Replace shock absorber. | |
| Hard driving. | Replace tire. | |
| Overloaded vehicle. | Replace tire and reduce load. | |
| Tires not rotated periodically. | Replace or rotate tire. | |
| Worn or loose road wheel bearings. | Replace wheel bearing. | |
| Wobbly wheel or tires. | Replace wheel or tire. | |
| Tires not adequately inflated. | Adjust the pressure. | |
| Wheel Hop | Blister or bump on tire. | Replace tire. |
| Improper shock absorber operation. | Replace shock absorber. | |
| Shimmy, Shake or Vibration | Tire or wheel out of balance. | Balance wheels or replace tire/or wheel. |
| Loose wheel bearings. | Replace wheel bearing. | |
| Worn steering linkage ball joints. | Replace ball joints. | |
| Worn upper or lower end ball joints. | Replace ball joints. | |
| Excessive wheel run -out. | Repair or replace wheel and/or tire. | |
| Blister or bump on tire. | Replace tire. | |
| Excessive loaded radial run -out of tire/wheel assembly. | Replace tire or wheel. | |
| Improper wheel alignment. | Check wheel alignment. | |
| Loose or worn steering linkage. | Tighten or replace steering linkage. | |
| Loose steering unit. | Tighten steering unit. | |
| Tires not adequately inflated. | Adjust tire pressure. | |
| Loose, bent or broken front or rear suspension parts. | Tighten or replace the appropriate suspension parts. | |
| Faulty shock absorber. | Replace shock absorber. | |
| Hub bearing preload misadjustment. | Adjust preload. | |
| Parts in power steering valve defective. | Replace power steering unit. | |
| Hard Steering | Bind in steering linkage ball studs, upper or lower end ball joint. | Replace ball joint. |
| Improper wheel alignment. | Check wheel alignment. | |
| Tire not adequately inflated. | Inflate tires to proper pressure. | |
| Bind in steering column or shaft. | Repair or replace. | |
| Improper power steering system operation. | Repair or replace. Refer to POWER STEERING SYSTEM in this section. |
|
| Too Much Play In Steering | Wheel bearings worn. | Replace wheel bearings. |
| Loose steering unit or linkage. | Retighten or repair. | |
| Worn or loose steering shaft universal joint. | Retighten or replace steering shaft. | |
| Worn steering linkage ball joints. | Replace ball joints. | |
| Worn upper or lower end ball joints. | Replace ball joints. | |
| Poor Steering Wheel Returnability | Bind in steering linkage ball joints. | Replace ball joints. |
| Bind in upper or lower end ball joints. | Replace ball joints. | |
| Bind in steering column and shaft. | Repair or replace. | |
| Bind in steering gear. | Check and repair steering gear. | |
| Improper wheel alignment. | Adjust wheel alignment. | |
| Tires not adequately inflated. | Adjust tire pressure. | |
| Loose steering wheel nut. | Retighten. | |
| Worn wheel bearing. | Replace. | |
| Abnormal Noise | Worn, sticky or loose upper or lower ball joint, steering linkage ball joints or drive axle joints. | Replace. |
| Faulty shock absorbers. | Replace. | |
| Worn upper or lower control arm bushing. | Replace. | |
| Loose stabilizer bar. | Retighten bolts or replace bushings. | |
| Loose wheel nuts. | Tighten nuts. Check for elongated wheel nut holes. Replace wheel if required. |
|
| Loose suspension bolts or nuts. | Retighten suspension bolts or nuts. | |
| Broken or otherwise damaged wheel bearings. | Replace wheel bearing. | |
| Broken suspension springs. | Replace spring. | |
| Loose steering unit. | Retighten mounting bolt. | |
| Faulty steering unit. | Replace steering unit. | |
| Wandering or Poor Steering Stability | Mismatched or unevenly worn tires. | Replace tire or inflate tires to proper pressure. |
| Loose steering linkage ball joints. | Replace ball joints. | |
| Faulty shock absorbers. | Replace shock absorber. | |
| Loose stabilizer bar. | Tighten or replace stabilizer bar or bushings. | |
| Broken or sagging springs. | Replace spring (pairs). | |
| Improper wheel alignment. | Adjust wheel alignment. | |
| Erratic Steering When Braking | Worn wheel bearings. | Replace wheel bearings. |
| Broken or sagging springs. | Replace spring (pairs). | |
| Leaking caliper. | Repair or replace caliper. | |
| Warped discs. | Replace brake disc. | |
| Badly worn brake pads. | Replace brake pads. | |
| Tires are inflated unequally. | Inflate tires to proper pressure. |