Skip the auto shop - Our mechanics make house calls

Q: Rear suspension arm bushing has play

asked by on

I have a vibration that occurs at ~55mph or over but only when veering/turning left at these speeds. I also feel what seems to be the same vibration from the same area (rear of car) when braking at these speeds. I hear the braking noise at lower speeds than the vibration occurs also, though at highway speeds I feel it in the pedal and at lowers speeds it's more like just a 'chatter'. 2 weeks ago it occurred when turning right. I have had 4 new tires installed and balanced, a 4 wheel alignment, new pads/rotors in front and new drums/shoes/springs in back. Now it occurs when turning left (though I still feel a very slight vibration when veering right but it's barely noticeable at all). I have discovered that the rear wheels (source of the noise/vibration) have some play when I hold them at 3 and 9 and move them in and out. I can see where the rear suspension arm meets the axle carrier there is some play in the bushing(~1/8 inch) when moving the tire. Could this be the cause?

A: Any amount of play in suspension components...

Any amount of play in suspension components can cause noise and/or vibrations. Duties of bushings are not only to keep suspension components to the chassis, but also to isolate you from noise. If the bushings are worn/broken, then you can hear added noise. They will also effect directional stability of the car. You "turn" the car with the steering wheel and front wheels but the rear wheels actually "steer" the car. If rear suspension components are loose/worn, then no matter how good the wheel alignment was set on an alignment rack, once those suspension components start moving around on the road, the car will track whatever direction those components move to. To have this verified, a certified technician from YourMechanic can come to your car's location to diagnose the vibration and determine what repairs are needed.

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!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: Acuator doesn't turn off

Hello. This sounds like the air pump actuator for the air shock system. If it is staying on all the time, this is usually because there is a leak somewhere in the air shock system. The actuator is what turns...

Q: Suspension air bag deflated

Hi. It's not uncommon for the rubber in suspension airbags to get brittle and crack over time. Eventually, these cracks permeate through to the air supply and must be replaced. Usually, the compressor will re-inflate the airbag if its a...

Q: can i put dexos oil in my sunfire?

You sure can, it needs to be 5w-30 which is the correct viscosity (flow rate of oil) for your vehicle. I recommend the use of this oil.

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...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
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...