Driveline Imbalance
WARNING: This page is about a different car, the 2005 Ford Pickup. However, it is still accessible from the selected car via links, so may be relevant.
Driveline imbalance can be caused by excessive looseness in the driveshaft, damaged driveshaft tubing, looseness or high runout at the driveshaft attachments (axle and transfer case flanges).
Excessive looseness in the driveshaft can be caused by CV joint or universal joint wear as well as loose-fitting slip-yoke splines. Inspect and install new driveshaft and halfshaft components as necessary. For additional information, refer to DRIVESHAFT or FRONT DRIVE HALFSHAFTS .