BMW Forums : BimmerForums banner

rumbling or throbbing

  1. BMW 3 Series Forum - Technical Talk on the BMW E46
    I have had a 2003 320d auto for about a year now. Ever since I bought it, I have noticed a rumbling/throbbing noise from underneath the car - whenever I reach aprox. 50-60 mph. When I give the accelerator a jab, the noise disappears. It is alway at this aprox. speed. Also happens sometimes when...