Q: U-joint vibration

asked by on

I've changed the u joint on the rear axle a few months back. Should have changed them all, but I didn't. It's a 4x4. I'm thinking the other joints are going bad as well as there is some excessive vibrations. Worse with higher speeds or highway speeds. When I'm driving and I tap the breaks and let it coast, the vibration stops until I accelerate again. Is that as well indicative for the driveshaft being out of balance because of the i joints? Or another issue. I was thinking about replacing all the joints and the carrier bearing.

My car has 235435 miles.
My car has an automatic transmission.

Worn U-joints installed on a well balanced driveshaft will cause vibration and noise as the whole assembly slaps around while rotating at high speed. However, the cause of the changing amount of vibration during coasting versus acceleration can only be evaluated once it is certain that the U-joints are all in good shape and properly installed. For example, if vibration continues even with new u joints all around, there could be a driveshaft alignment issue and, of course, the cause of the vibration could be elsewhere in quite a few other components. It is fairly easy to evaluate the condition of the remaining u-joints and so checking the ones you did not replace is the first thing to do. You should consider the condition of the front axles as well, whether CV joints or u-joints. If you desire that a certified specialist from YourMechanic perform a U-joint diagnostic and make repair recommendations.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. U-joint vibration

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Charged battery and car still won't start.

If you have already verified that you have a working battery in your Chevy Tahoe and despite this the engine is still not turning over, the next step would be to check the starting system. It is possible and common,...

Q: Front end vibration, steering wheel shaking

Hi there. I would have the tires rotated to see if the problem changes. If it does, then was a tire that was warped or worn unevenly. The problem is that balancing can be off depending on where you get...

Q: I HAVE A 2009 SRX V6

Between the drive shaft and the yoke into the differential is a u-joint. Based on your description that joint may be faulty and in need of replacement. To have that component inspected, and replaced if necessary, please request universal joint...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...