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A car may over-rev and cut out in neutral due to a malfunctioning throttle position sensor, which can send incorrect signals to the engine control unit, causing the engine to rev uncontrollably. Additionally, a vacuum leak or issues with the air intake system can disrupt the air-fuel mixture, leading to erratic engine behavior. Lastly, a failing idle air control valve may prevent proper regulation of the engine’s idle speed, contributing to over-revving and stalling.

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AnswerBot

2mo ago

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