Alternator strange noise - Ford Focus Forum, Ford Focus ST Forum, Ford Focus RS Forum
Ford Focus Forum
HomeContact UsAbout UsGalleryDiscussion ForumsMarketplace


Go Back   Ford Focus Forum, Ford Focus ST Forum, Ford Focus RS Forum > Ford Focus Tech Discussions > General Technical Chat

General Technical Chat This section is for technical discussions relating to general maintenance, electrical issues, engine trouble, and recalls.

Search This Forum | Image Search | Advanced Search    
Ford Focus Tire & Wheels FocusFanatics Merchandise

Reply
 
Thread Tools Display Modes
Old 01-19-2013, 04:38 PM   #1
toilet2000
Focus Jr. Enthusiast
 
Join Date: May 2012
Fan#: 98863
Location: Montreal, Canada
What I Drive: 2005 Black ZX4 ST

Posts: 26
FF Reputation: 1 toilet2000 Good Standing Member
Buy-Sell-Trade Rating: (0)
Alternator strange noise

Since I changed my alternator, there's been a strange "noise" that seems to be coming from it. It sounds really like an electric motor noise (like a hum) but somewhat loud (louder while in front and in the car that the actual sound of the engine... and I have the sport exhaust of the ST). The sounds goes louder and higher in pitch while i rev the engine. Any ideas what causes it?

It doesn't seem to alter anything in the car (the alternator works well), but it is really anoying, and im afraid it'll cause trouble later.

Anyway thanks for your answers!


__________________
Quote:
Originally Posted by replica81 View Post
I'm all for pushing boundaries, but installing an aftermarket tune and revving the piss out of the motor doesn't push any boundaries or further the human race. It just makes lots of noise.
toilet2000 is offline  
    Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 01-19-2013, 06:20 PM   #2
matmatician
Cars&Corgis
 
matmatician's Avatar
 
Join Date: Dec 2010
Fan#: 81361
Location: Mill Creek, WA
What I Drive: A ONE COLOR FOCUS, Ducatis

Posts: 4,441
Points 7,151, Level 56
Points: 7,151, Level: 56 Points: 7,151, Level: 56 Points: 7,151, Level: 56
Level Up 1% Completed
Level up: 1% Level up: 1% Level up: 1%
Forum Activity 2%
Activity: 2% Activity: 2% Activity: 2%
FF Reputation: 4 matmatician Good Standing Member
Buy-Sell-Trade Rating: (1)
Probably a belt or possibly the tensioner. I could be wrong though, I'm sure someone else will know more. If it's just a squeaky belt, it shouldn't cause any trouble.
__________________
Quote:
Originally Posted by BertST View Post
Hop on in babe! No really, you're gonna have to hop in. Roll Cage.
ROTM June '13, PNW Crew #42, SR #245, Rally Rev #02
matmatician is offline  
    Reply With Quote Quick reply to this message
Old 01-19-2013, 07:11 PM   #3
amc49
Focus Fanatic
 
Join Date: Mar 2012
Fan#: 96610
Location: Fort Worth, TX
What I Drive: 00 wagon, 02 sedan both zetec atx

Posts: 5,483
Points 3,167, Level 34
Points: 3,167, Level: 34 Points: 3,167, Level: 34 Points: 3,167, Level: 34
Level Up 78% Completed
Level up: 78% Level up: 78% Level up: 78%
Forum Activity 37%
Activity: 37% Activity: 37% Activity: 37%
FF Reputation: 25 amc49 Great Standing Member
Buy-Sell-Trade Rating: (0)
If you could describe it as a whine then alt should be checked, diode failure can make them whine............or alt bearing itself failing.
amc49 is offline  
    Reply With Quote Quick reply to this message
Old 01-20-2013, 03:02 PM   #4
toilet2000
Focus Jr. Enthusiast
 
Join Date: May 2012
Fan#: 98863
Location: Montreal, Canada
What I Drive: 2005 Black ZX4 ST

Posts: 26
FF Reputation: 1 toilet2000 Good Standing Member
Buy-Sell-Trade Rating: (0)
its not much of a whine... ill check the belt tensionner (i replaced the alternator myself, so maybe i did something wrong to it). From the interior of the car, i dont get the "nice roar" of the engine, i only hear the noise which sounds like a vaccuum cleaner that goes louder with the rev
__________________
Quote:
Originally Posted by replica81 View Post
I'm all for pushing boundaries, but installing an aftermarket tune and revving the piss out of the motor doesn't push any boundaries or further the human race. It just makes lots of noise.
toilet2000 is offline  
    Reply With Quote Quick reply to this message
Reply

Bookmarks & Social Networks

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Ford Focus Forum, Ford Focus ST Forum, Ford Focus RS Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Display Modes

Posting Rules
You may post new threads
You may 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

Forum Jump


All times are GMT -5. The time now is 03:32 PM.


Copyright 2002-2014 FocusFanatics.com. All Rights Reserved : Privacy Policy : Advertise Information

Focus Fanatics Ford Focus Forum offers many fun ways for you to engage with other Ford Focus Owners from across the world. Whether it be about the aftermarket performance modifications, technical how-to's, European tuned suspension or awesome fuel economy similar to the Audi S3, Ford Fusion and Acura TLX. You can find all Ford Focus and Focus ST related information here. Join our Ford Focus discussion forums and chat with local Focus enthusiasts in your area. Challenger Hellcat - Charger Hellcat