Also check your power steering fluid level. It might be a bit low causing the pump to cavitate a bit but once it expands on heating it goes away. Admittedly a wild ass guess.
Originally Posted by eVal
On my 02 I notice that there is a deep humming noise upon start up that will last a minute or two. I thought it was especially evident when the engine is cold, but now that I reflect on it I'm thinking it comes up regardless.
Its not me or the passenger humming, so does anyone have an idea what this sound is, if its normal or something to look into?
2010 BMW M3 Coupe M-DCT w/Tech-EDC, BMW M Performance Exhaust, BPM Stage I Tune, Space Gray / Fox Red Extended, and a Trunk Monkey known as "Der Stig",
plus the daily driver...
2011 BMW 135i M Sport DCT, w/BMW Performance Power Kit, Exhaust, and Brake Rotors, Space Gray / Coral Red, known as "Stiggie" with an outlaw F20 "M135i" badge.