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The intake manifold runner control (IMRC) on a 2003 Ford Windstar helps optimize engine performance by adjusting the length of the intake runners based on engine speed and load. This allows for improved airflow and better fuel atomization, enhancing torque and efficiency. A malfunctioning IMRC can lead to reduced engine power, poor fuel economy, rough idling, and increased emissions due to improper air-fuel mixture. Additionally, it may trigger warning lights or codes related to the intake system.

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2mo ago

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