I have a 2000 XLT w/4.6L 4WD. It only has 80,000 miles on it, and has been properly maintained since I bought it it early 2003.
In the last 12 months, I have replaced the Idler Arm, rear wheel bearings, and all 8 coil packs. Now I have a mysterious vibration between 64 and 67 MPH, but goes...