Why is My Car Rocking Back and Forth While Idling?

February 14, 2024

If your car is rocking back and forth while idling, this means there are some mechanical issues that need to be fixed. These problems could be as simple as a worn out or loose engine mount or they can be much more severe such as a bad head gasket.

A good mechanic will be able to determine the cause of your vehicle’s shaking by conducting a thorough inspection. They can also perform a quick diagnostic to see what the problem is and recommend the appropriate repairs.

Another reason your car might be rocking back and forth when stopped is due to worn or uneven brake pads and rotors. These components can change shape if they are exposed to extreme heat over time, such as when you apply the brakes very hard and long. This can cause them to overheat and become warped, resulting in an unstable braking experience.

Your car’s springs can also be a cause of this issue. If your vehicle’s springs are wearing out, they will be unable to absorb the shock of hitting bumps and other irregularities on the road. This will result in the car jerking when it is parked and can be very dangerous if you are not paying attention.


Traffic Dave is on a mission to help traffic engineers, transportation planners, and other transportation professionals improve our world.
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