Extreme Power House
BMW 3-Series (E90 E92) Forum > BMW E90/E92/E93 3-series General Forums > General E90 Sedan / E91 Wagon / E92 Coupe / E93 Cabrio > Help requested diagnosing a noise

Thread Tools Search this Thread
      11-12-2010, 11:28 AM   #1

Drives: 2007 328i
Join Date: May 2010
Location: Columbus, OH

iTrader: (0)

Help requested diagnosing a noise

I have heard a buzz/hum that sounds somewhat "electronic" that only last about a second then repeats. For example, it will start when I coast or accelerate. After spending some time trying to pinpoint, I think the A/C or heat needs to be on for it to make the noise.

If I have the fan off and press the snowflake to turn the a/c on, sometimes it will make the hum noise. However when I have the car parked and press the snowflake, I do not hear the hum.

Also, I have noticed that the noise appears sometimes if I come to a stop and while stopped I can get the noise to start and stop if I adjust how hard / weak I press the brake. I don't think it is related to the breaks though.
Considering the car is an 07, I'm hoping it could be a belt or pulley making the noise. Worried I won't be able to replicate while at the dealer.

Reaching out to the forum in case anyone has any ideas or has encountered a similar noise. Any help would be appreciated.
Appreciate 0
      01-24-2011, 03:23 PM   #2
Enlisted Member
IronBear's Avatar

Drives: 2006 330xi
Join Date: Aug 2007
Location: Northern NJ

iTrader: (1)

Ever Figure out what it was?

I have a similar issue, I heard a noise when I have the heat on and accelerate. Did you ever figure out what it was? Any help would be appreciated.

Appreciate 0


help me, noise

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

All times are GMT -4. The time now is 06:20 PM.

Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST