Battery/Alternator Help - Ford Powerstroke Diesel Forum
Powerstroke.org is the premier Diesel Truck Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 05-27-2012, 08:37 AM
Compression Ignition Addict
 

Join Date: Sep 2010
Location: Northern California
Posts: 556
Thanks: 0
Thanked 1 Time in 1 Post
Feedback Score: 0 reviews
Battery/Alternator Help

I replaced both batteries just over a year ago. Ive noticed the battery warning light on my dash has been turning on and off intermittently for the past few weeks. This morning I went out to start it up, and gave that annoying rapid clicking sound and dash lights went out. I tested 11v at each battery. Turned the key to "on", and each battery dropped to 8v. As all the accessories began their pre-start, each battery dropped to 7, 6, 5, and eventually 0v. I'm not looking forward to pulling both batteries and taking them to the autoparts store for testing, if I don't have to. I'm curious whether it's a battery issue, or possibly an alternator. Any advice?
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2  
Old 05-27-2012, 08:58 AM
Powerstroke.org Rookie
 

Join Date: May 2012
Posts: 15
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
I had the same problem with the dash light coming on and it ended up being the alternator and one of my batteries had a dead cell, so 2 new batteries and 1 alternator later I was good to go. Definetely get the batteries tested so you know your system is producing full power so you dont kill your FICM.
Reply With Quote Quick reply to this message
  #3  
Old 05-27-2012, 01:23 PM
Compression Ignition Addict
 

Join Date: Sep 2010
Location: Northern California
Posts: 556
Thanks: 0
Thanked 1 Time in 1 Post
Feedback Score: 0 reviews
Thanks Harley!

I pulled the alternator and took it to Napa. They tested it 3 times at 13.7v, 13.9v, and 14.1v (Passed) I asked them to test the replacement I was going to get, and it tested at 7.9v, 8.6v, and 9.3v (Failed). I thought that was strange, but took the plunge and swapped them out. I jumped my batteries off my other vehicle, and started the truck up. Took it for a good 30min drive. My battery light never came on, and after 4 start and stops, it cranked just fine. I guess Napa's machine wasn't working, cuz the truck has been fine all day. Only odd thing is I found 2 blown fuses (fog lamps and the trailer battery charger).
Reply With Quote Quick reply to this message
  #4  
Old 05-29-2012, 07:46 PM
Powerstroke.org Rookie
 

Join Date: May 2012
Posts: 15
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Yea I seem to remember my trailer fuse blowing too, maybe their tied in together somehow? Idk but I'm glad it worked out, that little battery light can really get annoying.
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Ford Powerstroke Diesel 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:
If you do not want to register, fill this field only and the name will be used as user name for your post.
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
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -8. The time now is 08:12 PM.


Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.6.1
Garage Plus, Vendor Tools vBulletin Plugins by Drive Thru Online, Inc.

vB.Sponsors