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A 1996 Suzuki idling at 400 RPM in slow-moving traffic may indicate a few potential issues. It could be due to a malfunctioning idle air control valve, which regulates airflow to the engine at idle, or it might be a result of a vacuum leak that affects engine performance. Additionally, old or dirty spark plugs could also cause irregular idling. It's advisable to have the vehicle checked by a mechanic to diagnose and resolve the issue.

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AnswerBot

2w ago

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