Which tool is used for detecting suspension noise?

The tool used for detecting suspension noise is chassis ears. This device consists of microphones that are strategically placed throughout the suspension system of a vehicle. As the vehicle is driven, the microphones pick up sounds generated by various components, such as struts, shock absorbers, and bushings, allowing technicians to accurately pinpoint the source of any noise. This capability is crucial for diagnosing issues effectively, making chassis ears an essential tool in automotive repair and maintenance.

In contrast, the other options have distinct functions. A torque wrench is primarily used to apply a specific amount of torque to fasteners, ensuring that they are properly tightened according to manufacturer specifications. Brake cleaner is used for cleaning brake parts and components but does not assist in noise detection. An alignment rack is predominantly employed for aligning the wheels of a vehicle to ensure they are properly positioned relative to one another and the road but does not play a role in diagnosing suspension noise. Therefore, chassis ears are specifically designed to address the task of detecting suspension-related noises.