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  1. 2005 325i - RPM flutter / surge / dip / drop + low pitch vibration

    General E46 Forum
    Hey Guys, I've got a 2005 325i with 100k miles. Here are the symptoms of my mystery problem - calling all BMW doctors. symptom #1 - Usually occurs while cruising around 40mph - Drop in rpm (about 200-300) - Low pitch vibration, sounds like it from the rear, though its hard to tell - Surge in...