Go Back   Ford Truck Enthusiasts Forums > Newer Light Duty Trucks > 2007 - 2014 Expedition & Navigator
Sign in using an external account
Register Forgot Password?


2007 - 2014 Expedition & Navigator 2007, 2008, 2009, 2010, 2011, 2012, 2013 and 2014 Ford Expedition and Lincoln Navigator

Reply
 
 
 
 
LinkBack Thread Tools Search this Thread
  #1  
Old 09-28-2008, 09:15 AM
Camphill Camphill is offline
New User
 
Join Date: Jan 2005
Posts: 8
Camphill is starting off with a positive reputation.
08 Expy - Electrical Noise in audio system

Just installed a Ham Radio in my 08 Expy. I built a filter to remove alternator whine. It works great!

On the other hand, I get terrible electrical noise for 10 seconds if I:

Put the key in the ignition
Open a door
Close a door

It's obviously computer related, I assume.

The computer sees the key has been inserted and starts checking the key to see if it's the correct coded key.

The computer sees the door has been opened/closed and needs to keep the interior light son for X period of time.

After 10 seconds the electrical noise completely goes away.

Any ideas what device might cause this any what wires might need ferrite beads installed? I hate to go placing ferrite beads everywhere cause I'd probably have to have 100 on hand to cover everything.

Was hoping someone else might have run into this.
Reply With Quote
  #2  
Old 09-28-2008, 09:47 AM
heymrdj's Avatar
heymrdj heymrdj is offline
Elder User
 
Join Date: Aug 2007
Location: Churubusco, IN
Posts: 831
heymrdj is gaining momentum as a positive member of FTE.heymrdj is gaining momentum as a positive member of FTE.
heymrdjlive
I would be interested in this filter. Mine has this pretty bad as well (2004). I have the audiophile system and if you turn on the radio you can hear the wine if the radio is only like 1 or two notches up, and the whine matches the rev. I had this REALLY bad on my summer vacation. I had my laptop as my 80GB MP3 player, plugged into the read DVD AUX port, and the laptop was on an inverter (Pure Sine Wave 500 watt inverter). The noise wasn't there if it wasn't plugged in, but it sure was noticeable, even at mid volumes, when plugged in. I thought I wouldn't have that issue since I bought a pure sine wave inverter.
__________________
Current: 2014 Ford Fiesta SE Green Envy
Past:
RIP 2004 Expedition - The Real LNDBARJ 2007-2014
Reply With Quote
  #3  
Old 09-28-2008, 09:54 AM
Camphill Camphill is offline
New User
 
Join Date: Jan 2005
Posts: 8
Camphill is starting off with a positive reputation.
Here's a link to the web page for the filter. Don't laugh, it works!


New Page 1

Keep in mind that it must be placed in line with the device receiving the alternator whine. As a filter, it filters out, or blocks sine waves at certain freqs.
Reply With Quote
Old 09-28-2008, 09:54 AM
 
 
 
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
California CVRA decal question tomve Super Duty & Heavy Duty 4 08-15-2013 03:30 PM
The alarm keeps sounding! mrgrumpass 1997 - 2003 F150 0 04-07-2013 05:03 PM
1966 F250 - Decode warranty plate data 66_in_ky 1961 - 1966 F-100 & Larger F-Series Trucks 2 07-26-2008 06:05 AM
Some '09 SD information... PowerStrokeHD Super Duty & Heavy Duty 4 03-10-2008 09:34 PM
Problems with electric window *pic* JoeKramer 1987 - 1996 F150 & Larger F-Series Trucks 2 01-10-2005 12:13 AM


Go Back   Ford Truck Enthusiasts Forums > Newer Light Duty Trucks > 2007 - 2014 Expedition & Navigator

Tags
2010, audio, automobile, beads, electrical, escape, expedition, ferrite, ford, ignitions, noise, radio, trucks

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 On
Trackbacks are On
Pingbacks are On
Refbacks are On

Forum Jump


Participate In The Forums

Create new posts and participate in discussions. It's free!

Sign Up »





All times are GMT -5. The time now is 09:28 PM.


Powered by vBulletin® Version 3.8.7 AC1
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Advertising - Terms of Use - Privacy Statement - Jobs
This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. Ford® is a registered trademark of the Ford Motor Company.

vbulletin Admin Backup