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BMW 520D 2.0 N47 2008 - Customer complains of wooshing noise #

Posted by George Ambelas on October 20, 2012, 4:53 pm

Year of Manufacture *: 2008
Engine Size and Code *: 2.0L N47
( Optional ) ECU Type: DDE 7.1
( Optional ) Scanner Used: OPUS CMT
( Optional) Fault Codes: 4B4C 447B 480A 4390

Hi everyone this came in yesterday the customer complains of a wooshing noise as if it has a split turbo hose. i have smoked the turbo hoses and intercooler and they are fine and so is the exhaust. the car runs fine and the mil is off a scan showed these fault codes
4b4c drehmoment-anf-ste,oxbi
447b oxsgen sensor
480a particalate trap sensor
4d03 exhaust back pressure sensor
4390 boost temperature sensor
do you know what could be caucing this wooshing noise on aceleration yet not affecting the car's performance?

Re: BMW 520D 2.0 N47 2008 - Customer complains of wooshing noise #

Posted by Jim Power <iframe src='https://members.boardhost.com/ukautotalk8/info/user=ukat3202' width='330' height='300' border=0 style='border:none;'> on October 23, 2012, 1:01 am, in reply to "BMW 520D 2.0 N47 2008 - Customer complains of wooshing noise #"
James Power

Hi George

Cant help you much with the fault codes im afraid, but, I would not depend too muuch on the smoke tester for detecting a leak as they do not generate enough pressure on a turbo diesel on my experience.
Jim

jim power

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