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  #1  
Old 01-12-2019, 12:30 PM
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Turbo whistle

Hello, everybody.
Im new here and i hope i post where i should.
I ve got a x5 e70 non lci, 30d 2010. I got a turbo whistle between 1500-2000 rpm and i dont know why...the engine pulls good, the sound is louder when cold, but it is not gone when fully warmed. Also, i had the swirl flaps blanked and the vacuum hose is blanked with a screw.
Can you help me, please ? Im tired of this noise... drives me mad.


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  #2  
Old 01-14-2019, 11:39 AM
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I have a similar symptom, but would describe it as a squeal under load, common when cold, less so when warmed up. Was thus far assuming bearings, & I needed to look for an oil leak?
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  #3  
Old 01-14-2019, 01:21 PM
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I assume u can look for an oil leak. i dont have any leaks


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  #4  
Old 01-15-2019, 12:40 AM
ard ard is offline
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all your seals good?
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  #5  
Old 01-15-2019, 03:58 AM
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As i could see with the bonnet opened, i m no mechanic so i couldnt do an advanced search. Btw, can the vacuum control hose for the swirl flaps to be involved in this ?


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  #6  
Old 01-15-2019, 06:29 PM
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Quote:
Originally Posted by ard View Post
all your seals good?
For mine, I didn't see anything obvious, but need to perform an exploratory. There was gunk in the general area, but 127kmi & not real accessible.

Surprised to not find much searching for this? Maybe not using the correct bimmer turbo terms?
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~~~~~~~~~
'10 X5 35D - just acquired, no mods // '04 Mini R53 - lots of mods, rebuilding // '03 Mini R53 - sold
'03 X5 3.0i - lots of upgrades, passed to son // '98 540i - other son's
'94 E36 318ic - son's parting out // '96 E36 328ic - son's sold
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  #7  
Old Yesterday, 02:48 AM
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I thought the same. I dont find much information about this problem...


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  #8  
Old Today, 10:34 AM
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Is it a siren sound or a whistle? A search on siren brings up lots of discussions.


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  #9  
Old Today, 10:43 AM
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Turbo whistle

https://youtu.be/Qdrq1CSpJUk

I searched on youtube, it sounds like this. Between 1200-2000 rpm to be very very exact and under easy throttle.
If i push the throttle gently it whistles, but when i push it harder the whistle disappears and when i release it, it whistles again until idle.


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Last edited by montela1980; Today at 11:03 AM.
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  #10  
Old Today, 03:10 PM
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That's more of a whine, not whistle.
Also, are you sure it is from the turbo?

To me it sounds like a noise a bad bearing would make. Idler pulley maybe?

Pop the boot/hood, have someone rev and listen what area it is coming from.
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