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AFastOne · 07-08-2014, 08:12 PM

Your secondary air pump is going out. My e39 would sound like a jet engine when it was on its way out.

07-08-2014, 08:12 PM	#4
AFastOne New Member 4 Rep 28 Posts Drives: 135i Join Date: Nov 2011 Location: Atlanta iTrader: (2)	Your secondary air pump is going out. My e39 would sound like a jet engine when it was on its way out.
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