Which of the following symptoms might indicate a failing torque converter?

A failing torque converter can manifest several symptoms, one of which is shuddering during acceleration. This occurs due to the converter's inability to effectively transfer power from the engine to the transmission when it is not functioning properly. When the torque converter is in good condition, it creates a smooth transition of power. However, if it becomes faulty, vibrations can occur, resulting in a noticeable shuddering sensation that the driver experiences during acceleration.

The other symptoms listed tend to point to different issues. For instance, excessive steering responsiveness isn't directly related to the torque converter's operation and may indicate problems elsewhere in the steering or suspension system. Fluid leaks under the vehicle can signify a variety of issues in the transmission or other fluid systems, but they do not specifically indicate a torque converter problem. Frequent engine stalling commonly suggests issues with the engine itself, such as fuel delivery or other critical engine malfunction, rather than being a direct symptom of a torque converter failure. Thus, shuddering during acceleration is a specific indication of torque converter issues.