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Discussion Starter · #1 ·
my e46 is making a strange noise from behind the dashboard when i realy rev the car while driving it doesnt do it when stood still it sounds like a rasberry noise coming from behind the the glove box any ideas cheers ryan :thumbsup
 

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could you remember to add the vehicle details in the thread title next time as per forum rules please, they have been done for you this time. It makes it far easier for people looking up help for their own problems or conversions.

Have you checked for any air leaks or split hoses yet from the induction pipes and engine breather system? :thumbsup

Should be first port of call :cool

Check out #1 here also http://www.realoem.com/bmw/showparts.do?model=AL32&mospid=47631&btnr=11_1514&hg=11&fg=15
 

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Discussion Starter · #3 ·
hi sorry about that ill have a look is it best to remove it also how hard is it to do cheers ryan
 

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hi sorry about that ill have a look is it best to remove it also how hard is it to do cheers ryan
If the valve whistles from the triangular vent in the top when the car is idling then it's knackered :thumbsup common thing to go.

Any idling fluctuations? slight rough tick over? stalling at junctions? :confused
 

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I would say get the fault codes read at a BMW specialists but it will be best to check for air leaks first from split induction pipes,engine breather pipes and vacuum pipes, all air should travel past the Mass Air Flow Meter that goes in to the engine.

Plus I'm not sure if the scanner has ears to listen to the noise :hihi

Let us know how you get on :thumbsup

Also check number 3 here out carefully http://www.realoem.com/bmw/showparts.do?model=AL32&mospid=47631&btnr=13_0634&hg=13&fg=15
 

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Discussion Starter · #7 ·
cheers for that ill check the hose i had the fault codes read about a month ago and it came back will a clean bill
 

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Discussion Starter · #8 ·
ive been and checked my car over there seems to be air blowing out from what i think is the air pump it only does it for a few mins on start up then goes of there only seems to be one screw holding the top on if i push down on it the air stops and the engines changes sound is this normal cheers ryan
 

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3 mins for the emmission pump sounds too long. Sure it's not something like 45 seconds? This unit is used to minimize emmisions at cold start up by pumping extra air into the exaust manifold so that the cat can burn off unburned hydro carbons.
 

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They are common for making some noise but if it's getting really noisy then it may be on the way out, is there anything loose on the top? it should be all pretty much a solid part :thumbsup
 
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