Driveline Angle
An incorrect driveline (pinion) angle can often be detected by the driving condition in which the vibration occurs.
- A vibration during coastdown from 72 to 56 km/h (45 to 35 mph) is often caused by an excessive U-joint angle at the axle (pinion nose downward).
- A vibration during acceleration, from 56 to 72 km/h (35 to 45 mph) may indicate an excessive U-joint angle at the axle (pinion nose upward).
When these conditions exist, check the driveline angles. For correct driveline angles, see DRIVELINE/AXLE SPECIFICATIONS .
If the tires and driveline angle are not the cause, perform the NVH tests to determine whether the concern is caused by a condition in the axle. See SYMPTOM TROUBLESHOOTING CHART - DRIVELINE/AXLE .