2002 e39 sound from engine - BMW Forum - BimmerWerkz.com
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#1 (permalink) Old 08-21-2008, 07:42 PM
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2002 e39 sound from engine

New to site and thanks to all. I have a 2002 e39 when the engine is normal temps i get like a whistle sound at engine compartment. Can't point it out i have 63,000 miles on her. Sometimes when idle park the sound goes away then hit the gas and it starts.
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#2 (permalink) Old 08-21-2008, 07:44 PM
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Your intake piping might not be sealed tightly to your throttle body.

Your intake piping might also have developed a small hole.

Your air filter box might be slightly open.

Your mechanical radiator fan clutch might be on the way out.

Can anybody else think of any other possibilities?



1999 E39 540i/6-VF Stage 1 S/C, Dinan exhaust, Dinan strut+shock braces, Dinan ltwt flywheel + clutch, Dinan Brembo BBK, Dinan monoball, H&R Springs, Koni Yellows, M5 sways, Dinan forged 18" wheels, &c.

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#3 (permalink) Old 08-21-2008, 07:47 PM
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It sounds like its coming from the right side of the engine if you are facing the engine.
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#4 (permalink) Old 08-21-2008, 07:54 PM
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Well, that is where the throttle body is...



1999 E39 540i/6-VF Stage 1 S/C, Dinan exhaust, Dinan strut+shock braces, Dinan ltwt flywheel + clutch, Dinan Brembo BBK, Dinan monoball, H&R Springs, Koni Yellows, M5 sways, Dinan forged 18" wheels, &c.

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Sold 2-28-07: 1997 E36 M3/4, 8-30-05 RIP 1997 528i


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#5 (permalink) Old 08-23-2008, 05:38 AM
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Its a 2002 540i 4.4 v8. Maybe its the idle pulley something like that.
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#6 (permalink) Old 08-23-2008, 09:22 AM
OMFG another one!?
 
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Maybe the accessory belt slips a bit?

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#7 (permalink) Old 08-23-2008, 09:53 AM
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alternator, maybe?... I wonder if yours has the alternator that has the air horn attached to it for cooling. a partially clogged airway will produce a whistle-like noise.

Have a great weekend
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#8 (permalink) Old 08-23-2008, 12:41 PM
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Quote:
Originally Posted by Wiltron View Post
New to site and thanks to all. I have a 2002 e39 when the engine is normal temps i get like a whistle sound at engine compartment. Can't point it out i have 63,000 miles on her. Sometimes when idle park the sound goes away then hit the gas and it starts.
Yea I know exactly what you are talking about--it is very annoying and I am a complete audiophile, so I took it to the stealership, and of course they said the usual "we didn't hear that sound"/"the car functions as a normal 5-series would" BULLSH**!
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