BMW 1 Series Coupe Forum / 1 Series Convertible Forum (1M / tii / 135i / 128i / Coupe / Cabrio / Hatchback) (BMW E82 E88 128i 130i 135i) - View Single Post - Weird humming/"mooing" sound from exhaust side of engine? Got a video.

graves4r6 · 02-05-2013, 04:37 PM

OK...after going to two different dealerships finally the third one found the problem

. They said the noise came from the pressure converter (Boost Solenoid). They replaced it and the annyoing noise is gone!

02-05-2013, 04:37 PM	#15
graves4r6 Captain 55 Rep 765 Posts Drives: Bicycle Join Date: Feb 2006 Location: Heaven on earth iTrader: (14)	OK...after going to two different dealerships finally the third one found the problem . They said the noise came from the pressure converter (Boost Solenoid). They replaced it and the annyoing noise is gone!
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