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  #1  
Old 03-22-2006, 06:04 PM
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X5 is still whistling!

EDIT: traded in my 3.0i for 4.8is. Problem fixed


Below is the original post I started regarding a whistling sound my X5 makes when driving at low rpm's and pressing on the accelerator.
It's similar to the whine of a supercharger, but annoying.
http://www.xoutpost.com/x5-e53-forum/...stling-x5.html

Based on the feedback from fellow members, the dealer tried the following...
1) Replaced DISA valve - no change, replaced w/original part.
2) Replaced Idle Air Actuator - no change, replaced w/ original part
3) Replaced the throttle body - minimal change if any, kept new throttle body
4) Checked air filter box for any leaks - none found

Service manager claims the whistling is due to the vehicles age.
2003 X5 w/ 48K
He and the tech drove a newer X5 and whistling was not there. Then they drove a '03 w/similar mileage and whistling was detected.
Three of my co-workers also drive X5's. Two do not have the whistle and one does.
Does anyone have another idea?
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Last edited by X5ive; 05-13-2007 at 12:09 PM.
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  #2  
Old 03-22-2006, 06:39 PM
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I'm sticking with my original reply: LINK Mine has been doing it for 4 years now since new. No biggie.
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Old 03-22-2006, 09:02 PM
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SuperGreg,
I believe your correct in saying it's no biggie. However, I still don't like hearing it.
I'm going to keep searching for the source of the whistling.

Thanks
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Old 03-22-2006, 09:39 PM
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could it be a belt?
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  #5  
Old 03-22-2006, 09:42 PM
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Ive had the same problem since it was brand new and the dealer said it is normal.
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Old 03-22-2006, 09:48 PM
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I don't think so. It's a different kind of sound.
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Old 03-22-2006, 09:51 PM
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Looks like they focused on air intake, but there are other sources of vacuum or air leaks - the vacuum system itself, MAF's, any sensor that measures air, etc. What's tricky about air leaks is that sometimes people have different perceptions of where the sounds come from because they hear things differently. The best thing to do is get a couple of friends over, pop the hood, fire up the engine, and get a consensus as to where the whistllng is originating.
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Old 03-22-2006, 10:25 PM
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Quote:
Originally Posted by X5ive
SuperGreg,
I believe your correct in saying it's no biggie. However, I still don't like hearing it.
I'm going to keep searching for the source of the whistling.

Thanks
Hey, if you can find out what it is, let me know . I remember posting the same thing on the [Oops]Fly board way back when I bought mine. Everyone at that time said it was normal as well.
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Old 03-22-2006, 10:38 PM
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Quote:
Originally Posted by X5ive
Service manager claims the whistling is due to the vehicles age.
Yeah, right. Mine's the same age and mileage. No whistling. Just curious, does the whistling happen only when the vehicle's in motion? Definitely coming from the engine compartment and not underneath?
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Old 03-22-2006, 10:50 PM
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Is there any connection between rpm, vehicle speed and shift lever position? At what point does it go away? Any chance it could be from the torque converter or is it a whistling like whistling with your mouth or the whistling of an cracked window?
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