Diagnosis And Testing Chart
| CONDITION | POSSIBLE CAUSES | POTENTIAL CORRECTIONS |
|---|---|---|
| FRONT END WHINE ON TURNS | 1. Worn or damaged wheel bearing | 1. Replace the hub and bearing. |
| 2. Incorrect wheel alignment | 2. Check and reset the wheel alignment. | |
| 3. Worn tires | 3. Replace the tires. | |
| FRONT END GROWL OR GRINDING ON TURNS | 1. Worn or damaged wheel bearing | 1. Replace the hub and bearing. |
| 2. Engine mount grounding against frame or body | 2. Check for a motor mount hitting the frame rail and reposition the engine as required. | |
| 3. Worn or broken C/V joint | 3. Replace the C/V joint. | |
| 4. Loose wheel lug nuts | 4. Verify wheel lug nut torque. Refer to TORQUE SPECIFICATIONS . | |
| 5. Incorrect wheel alignment | 5. Check and reset the wheel alignment. | |
| 6. Worn tires | 6. Replace the tires. | |
| FRONT END CLUNK OR SNAP ON TURNS | 1. Loose wheel lug nuts | 1. Verify wheel lug nut torque. Refer to TORQUE SPECIFICATIONS . |
| 2. Worn or broken C/V joint | 2. Replace the C/V joint. | |
| 3. Worn or loose tie rod or ball joint | 3. Tighten to the proper torque specifications or replace the tie rod end. Refer to TORQUE SPECIFICATIONS . Or tighten to the proper torque specifications or replace the appropriate ball joint. Refer to TORQUE SPECIFICATIONS . | |
| 4. Worn control arm bushing | 4. Replace the control arm. | |
| 5. Loose stabilizer bar or upper strut attachment | 5. Tighten the stabilizer bar or upper strut attachment to the proper torque specifications. Refer to TORQUE SPECIFICATIONS . | |
| FRONT END POPPING/CLICKING/SNAPPING DURING ACCELERATION AFTER DRIVE-TO-REVERSE SHIFT, REVERSE-TO-DRIVE SHIFT, OR WHILE TURNING | 1. Insufficient grease on the mating surface of axle half shaft outer C/V joint mating surface the wheel to the hub and bearing | 1. Separate the half shaft from the hub and bearing and wipe the mating surfaces clean. Apply a light coat of wheel bearing grease to C/V joint mating surface and reassemble. Tighten the NEW hub nut to the proper torque specifications. Refer to TORQUE SPECIFICATIONS . |
| FRONT END WHINE WITH THE VEHICLE GOING STRAIGHT AT A CONSTANT SPEED | 1. Worn or damaged wheel bearing | 1. Replace the hub and bearing. |
| 2. Incorrect wheel alignment | 2. Check and reset the wheel alignment. | |
| 3. Worn tires | 3. Replace the tires. | |
| FRONT END GROWL OR GRINDING WITH THE VEHICLE GOING STRAIGHT AT A CONSTANT SPEED | 1. Engine mount grounding | 1. Reposition the engine as required. |
| 2. Worn or broken C/V joint | 2. Replace the C/V joint. | |
| FRONT END WHINE WHEN ACCELERATING OR DECELERATING | 1. Worn or damaged drivetrain gears or bearings | 1. Replace drivetrain gears or bearings. |
| FRONT END CLUNK WHEN ACCELERATING OR DECELERATING | 1. Loose wheel lug nuts | 1. Verify wheel lug nut torque. Refer to TORQUE SPECIFICATIONS . |
| 2. Worn or broken engine mount | 2. Replace the engine mounts. | |
| 3. Worn or damaged drivetrain gears or bearings | 3. Replace drivetrain gears or bearing. | |
| 4. Worn or broken C/V joint | 4. Replace the C/V joint. | |
| 5. Worn or loose ball joint | 5. Tighten to the proper torque specifications or replace the appropriate ball joint. Refer to TORQUE SPECIFICATIONS . | |
| 6. Worn or loose control arm bushing | 6. Tighten to the proper torque specifications or replace the control arm. Refer to TORQUE SPECIFICATIONS . | |
| 7. Loose crossmember bolts (if equipped) | 7. Tighten the crossmember bolts to the proper torque specifications. Refer to TORQUE SPECIFICATIONS . | |
| ROAD WANDER | 1. Incorrect tire pressure | 1. Inflate the tires to the recommended pressure. |
| 2. Incorrect front or rear wheel toe | 2. Check and reset the front wheel toe. | |
| 3. Worn wheel bearings | 3. Replace the hub and bearing. | |
| 4. Worn control arm bushings | 4. Replace the control arm. | |
| 5. Excessive friction in steering gear | 5. Replace the steering gear. | |
| 6. Excessive friction in steering shaft coupling | 6. Replace the steering coupler. | |
| 7. Excessive friction in strut upper bearing (if equipped) | 7. Replace the strut bearing (if equipped). | |
| LATERAL PULL | 1. Unequal tire pressure | 1. Inflate all tires to the recommended pressure. |
| 2. Radial tire lead | 2. Rotate or cross-switch the tires. Refer to TIRE AND WHEEL ROTATION . | |
| 3. Incorrect front wheel camber | 3. Check and reset the front wheel camber. | |
| 4. Power steering gear imbalance | 4. Replace the steering gear. | |
| 5. Wheel braking | 5. Correct the braking condition causing lateral pull. | |
| 6. Excessive cross-caster | 6. Check the wheel alignment and adjust as necessary. | |
| EXCESSIVE STEERING FREE PLAY | 1. Incorrect steering gear adjustment | 1. Adjust or replace the steering gear. |
| 2. Worn or loose tie rod ends | 2. Replace or tighten the tie rod ends. | |
| 3. Loose steering gear bolts | 3. Tighten the steering gear bolts to the proper torque specifications. Refer to TORQUE SPECIFICATIONS . | |
| 4. Loose or worn steering shaft coupler | 4. Replace the steering shaft coupler. | |
| EXCESSIVE STEERING EFFORT | 1. Low tire pressure | 1. Inflate all tires to the recommended pressure. |
| 2. Lack of lubricant in the steering gear | 2. Replace the steering gear. | |
| 3. Lack of lubricant in the steering ball joints | 3. Lubricate or replace the steering ball joints. | |
| 4. Steering gear malfunction | 4. Replace the steering gear. | |
| 5. Lack of lubricant in steering coupler | 5. Replace the steering coupler. | |
| POPPING OR CLUNKING | 1. Loose stabilizer bar bolts | 1. Torque the stabilizer bar bolts to the proper torque specifications. Refer to TORQUE SPECIFICATIONS . |
| 2. Degraded or worn stabilizer bar bushings | 2. Replace the stabilizer bar bushings. | |
| 3. Loose stabilizer bar link nuts | 3. Torque the stabilizer bar link nuts to the proper torque specifications. Refer to TORQUE SPECIFICATIONS . | |
| 4. Worn stabilizer bar link | 4. Replace the stabilizer bar link.
NOTE:
Do not change more than one part at a time.
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