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Old 10-03-2012, 03:38 PM   #13
Registered User
Join Date: Nov 2009
Location: Fairfax, VA USA
Posts: 12,172
My Ride: '06 330CiC, '03 M5
Ground loop, bad connection, alternator has a shorted diode.

Use jumper cables to make a temp jumper from engine block to body ground and see if noise is reduced.
Solve your misfires, lean codes, rough idle -

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Temp Info -

Hidden OBC Menu - Check Voltage, Temps, Fuel Level -

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Lower hose fan switch O-ring - BMW #13621743299
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