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  1. Loud buzzing noise at ~2.2k rpm

    General E46 Forum
    Hello fellas, So a couple months ago i managed to acquire a 04 320i m-sport with 63k km's on the clock. Quickly after i got the car there has been a loud buzzing noise coming on at arround 2.2k rpm's. If i had to describe the noise in frequency i would say its like a bee but with a...
  2. 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...