Thread: buzzing noise
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      01-27-2013, 03:03 PM   #4
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Drives: Alpine White 335i
Join Date: Jul 2011
Location: Northern Virgnia

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You cannot hear the electric pump, the do not have an auxillary pump to keep the water circulating. regarless you need to let the car idle at minimum 2 mins, to avoid thrust bearing failure for the turbos. either your hearing the fan
For the DME box , or the Buzzing noise heard when you unlock the door is the pump
Being activated.