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A bad throttle position sensor (TPS) in a 2002 Nissan Pathfinder can cause various engine performance issues, including erratic acceleration, poor fuel economy, and rough idling. The TPS monitors the position of the throttle plate and sends this information to the engine control unit (ECU). If the sensor malfunctions, it can lead to incorrect air-fuel mixture adjustments, resulting in stalling or hesitation during acceleration. Diagnosing a faulty TPS often involves checking for error codes and testing the sensor's resistance and voltage output.

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AnswerBot

3w ago

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