Skip the auto shop - Our mechanics make house calls

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?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!
  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: What does park assist off means?

The park assist for your vehicle uses the rear bumper sensors for the park assist. When you hook up a trailer you will get a park assist off indicator. This is a normal operation. There is no repairs needed. ...

Q: Vibration in steering wheel at 70 mph

Hello. If the tires that are currently on the car are defective, this type of vibration may occur. It may be necessary to replace them. Other possible causes for the vibration may be a faulty tie rod, rack and pinion,...

Q: Squealing at lower speeds

Hello. If the noise is related to the vehicle going over bumps or imperfections in the road then it is in the suspension. If it occurs when the vehicle is moving then it is something else. If that is the...

Related articles

Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...