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#1 (permalink) Old 01-17-2007, 09:23 PM
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strange noise?

ive been having this strange noise that almost sounds like a blow off valve because everytime i let off the gas it happens... i think i have heard of it maybe being a fan clutch in the past, but im not sure... any one know what this is? and if it is the fan clutch, can i just do the fan delete mod and be done with it?
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#2 (permalink) Old 01-17-2007, 09:54 PM
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Remember When I talked to you about the ICV.. Well mine also had a vaccum hose leak.. And it sounded alot like a blow off valve.. HOpe that helps.. Same symptoms every tiem you let off the gas it sounds like that.. might wanna PM me so I can get all the facts it might be a totally differant sound but it might be worth your while.



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#3 (permalink) Old 01-18-2007, 01:29 AM
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i had a seized fan clutch on my old 325i, but it didnt sound like a BOV...it sounded like...i dunno...to me it sounded so SO fucking HOT!!!! i loved the sound it made, but it was robbing me of hp and my ac would turn off and the car would start over heating when i was at a stop for too long...im uploading a video as i type, ill post it when its done...damn it i miss my bimmer more and more evryday...


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#4 (permalink) Old 01-18-2007, 01:33 AM
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heres the vids




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#5 (permalink) Old 01-18-2007, 03:44 PM
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its more of a turbo spooling down sound... i ment blow off valve as in it acts like one, when i let off the gas is when the sound comes... or when im barely very lightly on the gas crusing... its idk... almost sounds like the chain on a bike? maybe... ima try and get a sound clip of it on here...
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#6 (permalink) Old 01-19-2007, 04:12 PM
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bump.
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#7 (permalink) Old 02-25-2007, 08:52 AM
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MiguelACA & Bimmerwerks: You rock! Thanks for the video.

-my 525 started to whine last night, and the vid captures the exact sound. I suspected the fan clutch so I typed it in the search bar and found it on the first try. That doesn't happen often

Good luck, Salt. Sorry to get off topic.
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#8 (permalink) Old 02-27-2007, 03:53 PM
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salt i think i have a similar fan. it doesn't sound like that video but it just sounds almost like almost a supercharger???

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#9 (permalink) Old 02-27-2007, 05:49 PM
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ima change out my fluids because i think it may be comming from the gear box, but right now im leaning on wheel berrings or something thats running on the aux. belt... i also found that im only running around 100 compression on my 6th cylinder right now because of a leaking exhaust valve so i think thats my idle problem... dont have the cash for a valve job right now if you know what i mean...
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