Battery light stays on - Ford Powerstroke Diesel Forum
User Tag List

 
LinkBack Thread Tools Display Modes
post #1 of 8 Old 05-17-2014, 06:01 PM Thread Starter
The Maddawg
 
maddawg89's Avatar
 
Join Date: May 2012
Location: Alabama, Montgomery area
Posts: 5,568
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 131 Post(s)
Thanks: 390
Thanked 107 Times in 100 Posts
Feedback Score: 3 reviews
Battery light stays on

Hey guys,

My 99 (details in sig), the battery light stays on when the key is out of the ignition.

There is a major draw on the batteries. I havnt been driving it much, but it kills the batteries in less than 2 days.

Is this a bad ignition switch?

It only comes on when the key os off and out. It is NOT on when the truck is running. Just: Truck Off Key Out.


~ The Maddawg



1999 F250 Lariat 4X4 Offroad
Under the hood: 7.3 diesel, 4in straight piped to 6in shotgun dual stacks, DIY 6637, Bigg Boost. Foil delete. Riffraff FRx. IH Bellowed Up Pipes. Wicked Wheel Gen 1. TS Chip with canned tunes
Cosmetic: Bushwhacker fender flares. Moto Metal 951 18's wrapped with Nitto Trail Grapplers 295/70/18
maddawg89 is offline  
post #2 of 8 Old 05-17-2014, 11:29 PM
Powerstroke.org Rookie
 
Join Date: Jun 2010
Posts: 10
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 1 Time in 1 Post
Feedback Score: 0 reviews
That's weird. What's the voltage gauge reading when the truck is on? Just out of curiosity.
JD. Huyler is offline  
post #3 of 8 Old 05-17-2014, 11:45 PM
Rodslinger's B1TCH
 
Join Date: Mar 2012
Location: Abbotsford BC
Posts: 1,312
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 11
Thanked 57 Times in 55 Posts
Feedback Score: 0 reviews
when the truck is off and battery light is on, pull out relays one by one until the battery light goes out. i'm thinking that there is a chance you have a relay that has welded itself into the on position.
steve604 is offline  
post #4 of 8 Old 05-17-2014, 11:56 PM
Rodslinger's B1TCH
 
Join Date: Mar 2012
Location: Abbotsford BC
Posts: 1,312
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 11
Thanked 57 Times in 55 Posts
Feedback Score: 0 reviews
now that i look at this diagram, it looks like you need a new alternator unless the voltage regulator on it can be replaced separately
Attached Thumbnails
Click image for larger version

Name:	ChargingSystem.jpg
Views:	88
Size:	93.6 KB
ID:	287938  
steve604 is offline  
post #5 of 8 Old 05-18-2014, 03:07 AM Thread Starter
The Maddawg
 
maddawg89's Avatar
 
Join Date: May 2012
Location: Alabama, Montgomery area
Posts: 5,568
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 131 Post(s)
Thanks: 390
Thanked 107 Times in 100 Posts
Feedback Score: 3 reviews
Just out of curiosity, how Shi you get that from the diagram?

I'll check out as soon as I can!

~ The Maddawg



1999 F250 Lariat 4X4 Offroad
Under the hood: 7.3 diesel, 4in straight piped to 6in shotgun dual stacks, DIY 6637, Bigg Boost. Foil delete. Riffraff FRx. IH Bellowed Up Pipes. Wicked Wheel Gen 1. TS Chip with canned tunes
Cosmetic: Bushwhacker fender flares. Moto Metal 951 18's wrapped with Nitto Trail Grapplers 295/70/18
maddawg89 is offline  
post #6 of 8 Old 05-18-2014, 03:24 PM
Rodslinger's B1TCH
 
Join Date: Mar 2012
Location: Abbotsford BC
Posts: 1,312
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 11
Thanked 57 Times in 55 Posts
Feedback Score: 0 reviews
It looks like the battery light in the cluster is controlled by the regulator. It looks like thebregulator might not be turning off when the key is off.

I've heard of alternators draining the battery with the vehicle off. It looks like the regulator is a part you can change out separately. It just bolts into the alternator.

Don't quote me on this. I'm not sure how the regulator is controlled to go off.

Try unplugging the regulator to see if the battery light goes out when the truck is off.
steve604 is offline  
post #7 of 8 Old 05-20-2014, 06:06 PM Thread Starter
The Maddawg
 
maddawg89's Avatar
 
Join Date: May 2012
Location: Alabama, Montgomery area
Posts: 5,568
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 131 Post(s)
Thanks: 390
Thanked 107 Times in 100 Posts
Feedback Score: 3 reviews
OK, so I was charging my battery on the passenger side. I purposefully left the cables ON but disconnected the other battery. After 2 days on a trickle charge, I was just at 25%. I felt the back of the alternator and it was WARM to the touch. The battery light was on inside the cab.

After this week Im just gonna replace the alternator, its obviously shot.



1999 F250 Lariat 4X4 Offroad
Under the hood: 7.3 diesel, 4in straight piped to 6in shotgun dual stacks, DIY 6637, Bigg Boost. Foil delete. Riffraff FRx. IH Bellowed Up Pipes. Wicked Wheel Gen 1. TS Chip with canned tunes
Cosmetic: Bushwhacker fender flares. Moto Metal 951 18's wrapped with Nitto Trail Grapplers 295/70/18
maddawg89 is offline  
post #8 of 8 Old 05-20-2014, 08:11 PM
Rodslinger's B1TCH
 
Join Date: Mar 2012
Location: Abbotsford BC
Posts: 1,312
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 11
Thanked 57 Times in 55 Posts
Feedback Score: 0 reviews
Did you try pulling relays one at a time to seeif one of them turns the battery light off?
steve604 is offline  
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:
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:
OR

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
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



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

 
For the best viewing experience please update your browser to Google Chrome