Engine Vibration: Overview
TABLE A - ENGINE VIBRATIONPossible Cause Repair
1. Engine condition and operation Check engine condition/operation
2. Engine accessories, belts, pulleys See Procedure A, page 4.
3. Engine component imbalance See Procedure B, page 5.
CAUTION: Determine if vibration is characteristic of engine type before beginning repair for imbalance. If normal, do not attempt to repair.
TABLE B - FRONT END VIBRATION
Possible Cause Repair
1 . Tire/wheel imbalance See Procedure C, page 7.
2. Tire/wheel run-out See Procedure D, page 7.
3. Steering and suspension See Procedure E, page 10.
4. Wheel alignment Use normal procedures.
5. Tire non-uniformity Replace tire.
TABLE C - REAR TIRE/WHEEL VIBRATION
Possible Cause Repair
1. Tire/wheel imbalance See Procedure C, page 7.
2. Tire/wheel run-out See Procedure D, page 7.
3. Tire non-uniformity Replace tire.
TABLE D - DRIVELINE VIBRATION
Possible Cause Repair
1. Driveshaft/differential phase match See Procedure F, page 10.
2. Universal joints See Procedure G, page 11.
3. Driveshaft run-out See Procedure H, page 11.
4. Driveshaft imbalance See Procedure I, page 13.
5. Companion flange run-out See Procedure H, page 11.
6'. T/M extension hsg. bushing Check bushing for wear.
7. Center support bearing Check bearing for wear.
8. Sleeve yoke spline Check spline for sticking.
9. Ring and pinion run-out See Procedure J, page 16.
10. Axle shaft/hub run-out See Procedure K, page 17.
Before beginning repairs of engine-related vibration, ensure proper engine condition and operation by thorough analysis. Additionally, confirm that vibration is not characteristic of the particular engine type by inspecting other similar vehicles. If condition is normal, do not attempt to repair it.