Skip the auto shop - Our mechanics make house calls

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?

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

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 will not start.

Claimed by Jeff Engstrom

Q: car will not start

The fuel injectors, EGR solenoid and TCL solenoids are all supplied power by the PCM and each of the injectors are sequentially ground actuated by the PCM. Power needs to be checked to all of these components to see if...

Q: My car loses power over time

Hi there. Usually, a professional mechanic would have to plug in a diagnostic scanner and download any error codes before beginning to guess what might be causing the loss of power on your Mitsubishi Galant. However, some of the usual...

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...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
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...