2004 E46 325ci sport - constant humming noise - E46Fanatics E46 BMW Social Directory E46 FAQ 3-Series Discussion Forums BMW Photo Gallery BMW 3-Series Technical Information E46 Fanatics - The Ultimate BMW Resource BMW Vendors General E46 Forum The Tire Rack's Tire Wheel Forum Forced Induction Forum The Off-Topic The E46 BMW Showroom For Sale, For Trade or Wanting to Buy

Welcome to the E46Fanatics forums. E46Fanatics is the premiere website for BMW 3 series owners around the world with interactive forums, a geographical enthusiast directory, photo galleries, and technical information for BMW enthusiasts.

You are currently viewing our boards as a guest which gives you limited access to view most discussions and access our other features. By joining our free community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join our community today!

If you have any problems with the registration process or your account login, please contact contact us.

Go Back   E46Fanatics > Tuning & Tech > Driveline, Engine & DME Tuning

Driveline, Engine & DME Tuning
Talk about driveline improvements, NA tuning and DME tuning your E46 BMW here. This includes diffs, intakes, exhausts, chips, software and OBD tuning.

Thread Tools Search this Thread Rate Thread Display Modes
Old 02-27-2012, 01:34 PM   #1
Registered User
Join Date: Feb 2012
Location: Essex
Posts: 1
My Ride: 325ci M sport coupe
2004 E46 325ci sport - constant humming noise

Hey Guys,
This is a first post for me on here, its a tad long and i apaolgise. For the past 2 years, i have had an annoying electrical type humming noise that developed on my car that would change pitch and tone with everything in the car including turning the steering slightly to using the window switches. I had various replies previously from members on another site last year who advised a change of power steering fluid to possibly correct the problem - this was done and it was still there. I eventually took the car to my BMW main dealers who had the car for a few days and agreed that they could here the noise, so a brand new genuine PAS pump, pulley, belt, and modified hose were fitted - but to no avail. The diagnosis was then given to be the 'characteristics of the engine' funny this, considering that this noise was never present for the first two weeks of owning the car. Anyway - i lived with this noise for all this time and i eventually got hacked off with it, so i tried to investigate it myself. Whilst driving the car, it sounds like the old austin metro (or a route master bus if your UK based) and then when idling - the normal persistant humming noise is there. So i got a friend to do two passes past me with both the clutch enagaed and disengaged - car sounds beautiful and quiet. Once my friend pulls up, i get inside and i hear the usual noise on idling and driving. Only the road noise covers it up. So i decided this was definatly something interior related (or can be heard inside) and i traced the exact same noise to around the steering cowling. I put a screwdriver against the plastic and my ear against the screwdriver, and that noise can be heard as though its coming from inside - also its confined to that area. before i start ripping it apart, does anyone have any clues as to what this is? Or what electrical (if it is electrical) is behind hear? or even if someone has had this problem.

Many Thanks guys
ex3para is offline   Reply With Quote
Ads by Google

Guests, get your FREE E46Fanatics.com membership to remove this ad.

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

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
Censor is OFF

All times are GMT -5. The time now is 09:39 PM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
(c) 1999 - VerticalScope Inc. All rights reserved.