Universal Joint Inspection
WARNING: This page is about a different car, the 2004 Mazda B4000, 2004 Mazda B3000, and 2004 Mazda B2300. However, it is still accessible from the selected car via links, so may be relevant.
Raise the vehicle on a hoist. Rotate the propeller shaft by hand. Check for rough operation or seized universal joints. Replace the universal joints if it shows signs of seizure, excessive wear, or improper seating.