What is a universal joint?
Rear-wheel drive vehicles rely on flexibility with their drivetrain and suspension systems.
The universal joints allow for extra movement. As your car travels over rough terrain, the U-joints let the driveshaft move up and down while transferring power from the transmission to the rear wheels.
The U-joints handle a lot of strain. Over time, the force from the driveshaft can cause the U-joint bearings to wear out—especially if they aren’t regularly lubricated.
What are the symptoms of a worn universal joint?
U-joints take a while to fail, so you’ll notice a few warning signs that gradually worsen until the joint completely breaks. These are the most common signs that it’s time to replace a bad U-joint:
Car vibration: You’ll notice the car vibrate because the driveshaft vibrates more as the U-joint gets worse.
Unusual noises: Clunking, rapid chirping, and banging sounds, especially when you shift gears, indicate that the universal joint needs to be inspected.
How many miles do universal joints last?
Universal joints usually last a very long time if you keep up the maintenance on your vehicle. Most U-joints last around 100,000 miles, although they can wear out earlier if the car is in an accident or not maintained.
Can I replace a U-joint myself?
If you’re confident in your DIY auto repair skills, you should be able to replace a universal joint at home. Keep in mind that you should be comfortable working on the driveshaft and that you’ll need a well-stocked garage so you have the right tools.