The universal joints can be a coupling that connects two shafts and allows movement everywhere.

This freedom of movement allows the drive shaft to advance along since the car passes over bumps. Most rear wheel vehicles will need the u-joint replaced one or more times during their service life plus more often should the vehicle is powerful or incorporates a manual transmission. Everything on the u-joint might be extended by servicing it regularly using the proper lubricants; however, popping the clutch and full throttle power shifting will shorten everything from the u-joint considerably.

First of all,  Drive the auto onto dual ramps or develop the car raised to get easier entry to underneath with the car for inspection from the u-joint.
Secondly,  Inspect the u-joints visually to guarantee the welds usually are not cracked, the check weights are not missing as there was no mud coating the u-joint. Spray or clean any mud through the u-joint. Replace niche weights or re-weld any cracked welds. These types of issues can make a vibration while driving but doesn't imply oahu is the u-joint.
At the end, Grasp spare on both from the u-joint and rotate it between the two while you're watching for virtually any play between the cross plus the yolk. If your cross moves within the yolk, replacing of the u-joint is warranted.