Download LIMITED SLIP AXLE CHATTER, SHUDDER, BINDING SENSATION, OR VIBRATION DURING LOW SPEED TURNING MANEUVERS FORD: 2002-2004 Mustang, 2003-2004 Expedition 2004 F-150 LINCOLN: 2003 Navigator MERCURY: 2002-2004 Motmtaineer This article supersedes TSB 06-02-16 to update the Service Procedure. ISSUE Some 2003-2004 Expedition, 2003 Navigator, 2004 F-150 vehicles equipped with a 9.75″ or 8.8″ limited slip rear axle, and 2002-2004 Explorer 4dr, Mountaineer, and Mustang vehicles equipped with 8.8″ limited slip rear axle may exhibit a chatter shudder, a binding sensation, or a vibration during low speed turns. On 4X4 vehicles, the sensation may appear to be originating from the iront axle or the steering gear. ACTION First verify the condition. On 4X4 trucks ensure that the vehicle is in 2WD, to isolate the rear axle. On all vehicles, turn the wheel fully right (or fully left) and then accelerate the vehicle.