Q: my car swayss back and forth on its own. starting at 30mph

asked by on

Car sways back at forth at 30mph or higher. I have replaced trailing arms and bushings sway bar link struts skill in rear end..

My car has 110000 miles.
My car has an automatic transmission.

Hello. If you have replaced these parts and it is still swaying then you need to check the tires. Make sure that they are the correct size.

Aftermarket wheels will also cause this problem if they are not the correct offset. If this started after the pets were replaced then you may have bump steer going on. This happens if you tighten down these parts while the vehicle is suspended in the air. This stretches the bushings and causes them to want to return to the wrong position.

I typically put the vehicle on the ground before tightening these parts down. If you want to have this problem properly check out firsthand, have the vehicle’s sway symptoms diagnosed by a certified mechanic so that the right repair can be made.

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. my car swayss back and forth on its own. starting at 30mph

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: My car cooling fan works for a few seconds when I turn the car off, not on when the car's on. Is the temperature sensor bad?

If it doesn't run for more than about a minute, that could be a normal situation. The fan is triggered by temperature at the cylinder head, and when the engine is off and the coolant isn't circulating, the heat rises...

Q: Dead short in the electrical system.

I would ask for help from one of the mechanics at YourMechanic. They will have one of their mechanics come to you with the proper test equipment and knowledge to diagnose a fix the short in your electrical system.

Q: Q: Car stalling while driving

Filling the oil up was a good start, but there may be a more complex issue at hand. You could have a vacuum leak, or you may have a clogged fuel filter. Both of these can cause stalling. There are...

Related articles

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...
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...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.