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E46 (1999 - 2006)
The fourth generation 3 Series (E46 chassis) was introduced in 1999 and set the standard for engineering and performance during it's years of production including being named to Car & Driver's 10 best list every one of those years! ! -- View the E46 Wiki

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  #1  
Old 07-14-2009, 10:18 PM
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Mein Auto: E60 M5 & Stage 3 Audi S4
Odd fan kinda sound inside the cabin

So I noticed after I installed my angel eyes a long time ago.
I've been hearing a fan type sound sometimes behind my cluster or near my ECU box area....
Can't really tell. Just sounds like air coming out of something or somewhere I'm really not even sure...
Here's a video and hopefully you guys can hear it and identify it.
Thanks.

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  #2  
Old 07-14-2009, 10:25 PM
slyfocks slyfocks is offline
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I can't really tell from the clip.

From your description sounds like you are just talking about the ECU box cooling fan. Not really sure I am understanding what the question is.
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  #3  
Old 07-14-2009, 11:33 PM
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Quote:
Originally Posted by slyfocks View Post
I can't really tell from the clip.

From your description sounds like you are just talking about the ECU box cooling fan. Not really sure I am understanding what the question is.
Is there even a ECU box cooling fan?
If so where is it located? Maybe I need to change it.
CUz I never heard this sound before until I installed my angel eyes...
And I only hear it sometimes not all the time.....
But if this ECU cooling fan really exists please show me the link of the part etc...
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  #4  
Old 07-14-2009, 11:54 PM
slyfocks slyfocks is offline
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Can't say if that is the issue. When the ECU fan bearings start to go, most people describe it either as a cricket in the dash sound or a very high pitch electronic tone.

see #5 in http://www.realoem.com/bmw/showparts...12&fg=35&hl=80

A better view and description can be found in the following DIY: http://m3forum.net/m3forum/showthread.php?p=2930056
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  #5  
Old 07-15-2009, 01:16 AM
ThreeTwoFive ThreeTwoFive is offline
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The fan on the climate control unit...I've never seen it on though..
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  #6  
Old 07-15-2009, 01:18 AM
efotysixthree30 efotysixthree30 is offline
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bump. Same issue, would like to know if you work out the kinks.

Cheers
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  #7  
Old 07-15-2009, 01:26 AM
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yea that is a weird sound babe hmmm this occured after the AE's or the projectors?
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  #8  
Old 07-15-2009, 01:29 AM
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Originally Posted by Missmodena310 View Post
yea that is a weird sound babe hmmm this occured after the AE's or the projectors?
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  #9  
Old 07-15-2009, 01:34 AM
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Originally Posted by TrickTizzle View Post
??? he got angel eyes first and then put them in the projectors how is that funny im asking wether it occured before the projectors or after
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  #10  
Old 07-15-2009, 09:21 AM
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Quote:
Originally Posted by slyfocks View Post
Can't say if that is the issue. When the ECU fan bearings start to go, most people describe it either as a cricket in the dash sound or a very high pitch electronic tone.

see #5 in http://www.realoem.com/bmw/showparts...12&fg=35&hl=80

A better view and description can be found in the following DIY: http://m3forum.net/m3forum/showthread.php?p=2930056
I'll change this out and see if this fixes the issue.

Quote:
Originally Posted by efotysixthree30 View Post
bump. Same issue, would like to know if you work out the kinks.

Cheers
I will let you know what I come up with.
Although all this morning on the way to work it never did it.
It only does it when the cars fully warmed up...

Quote:
Originally Posted by Missmodena310 View Post
yea that is a weird sound babe hmmm this occured after the AE's or the projectors?
Happened after I installed my first set of angel eyes.
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  #11  
Old 07-15-2009, 05:40 PM
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Your exhaust belt is loose, install a chrome one immediately!
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  #12  
Old 07-15-2009, 11:13 PM
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Listen to mine..... 4th time I've heard it

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  #13  
Old 07-15-2009, 11:41 PM
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Your exhaust belt is loose, install a chrome one immediately!
hahahha i found him chrome duct tape the other day ya know just incasee he needs to tape something up
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  #14  
Old 07-16-2009, 12:23 AM
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Well I figured it out.
Yes it was the ECU fan.
I guess ill be replacing it soon.
Now to find that DIY again.... Jake! where is it?
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  #15  
Old 07-16-2009, 11:17 AM
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$90s for the cover+blower aka fan for the ECU box.
That sound about right?
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  #16  
Old 07-16-2009, 12:02 PM
Melquin Melquin is offline
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Quote:
Originally Posted by MalibuMafiaV View Post
$90s for the cover+blower aka fan for the ECU box.
That sound about right?
Typical dealer price. Tischer has it for $73 exclusive of shipping. Might want to try just lubing it per the DIY first depending upon what type of noise/problem you actually having with it.
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  #17  
Old 07-16-2009, 01:15 PM
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Typical dealer price. Tischer has it for $73 exclusive of shipping. Might want to try just lubing it per the DIY first depending upon what type of noise/problem you actually having with it.
It just sounds like a loud old fan.
No cricket/squeeking sounds.
Maybe I should just try to spray it up with some W-D40 or MAF cleaner lol.
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  #18  
Old 07-16-2009, 01:30 PM
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Quote:
Originally Posted by Solidjake View Post
Listen to mine..... 4th time I've heard it

My car does the same exact thing.
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  #19  
Old 07-16-2009, 01:36 PM
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Originally Posted by Nando779 View Post
My car does the same exact thing.
Yea, I have no idea why it does it. Happened 3 times when I was driving and it lasted for a minute. Sounds like crap.



Malibutay, I'll find it later. If you can't wait search on fanatics.
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  #20  
Old 07-16-2009, 01:43 PM
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I'm glad there's fixes and DIYs for this.
It's the most annoying sound ever when you just want peace and quite.
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Audi S4 2000 Stage 3 - Dat turbo spool
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  #21  
Old 07-16-2009, 01:47 PM
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Quote:
Originally Posted by MalibuMafiaV View Post
...
Now to find that DIY again.... Jake! where is it?
Quote:
Originally Posted by Solidjake View Post
...
Malibutay, I'll find it later. If you can't wait search on fanatics.
Umm isn't that the very first thing that Slyfocks posted above in post#4?
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  #22  
Old 07-16-2009, 01:57 PM
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Originally Posted by kimmy View Post
Umm isn't that the very first thing that Slyfocks posted above in post#4?
There's a different DIY also.
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