Battery Light Slightly Flickering?????? - Ford Powerstroke Diesel Forum

Reply
 
LinkBack Thread Tools Display Modes
post #1 of 15 Old 03-03-2011, 06:18 AM Thread Starter
Powerstroke.org Fanatic
 
DieselFam's Avatar
 
Join Date: Mar 2009
Location: Minden, NV
Posts: 128
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Battery Light Slightly Flickering??????

Wife called yesterday and said the battery light in the excursion was slightly flickering as she drove down the road. It started in the morning with no problems and drove fine. I drove it when she got home and noticed the same thing. It flickers whether I was hard on acceleration or driving normally. Only when i was completely off the accelerator did it not flicker. It also flickerd when I put the brakes on. The alternator went bad and ruined my batteries in May of 2009. I replaced the whole set up at that time. Checked batteries and they are full. Any ideas before I take it in? Thanks
DieselFam is offline  
post #2 of 15 Old 03-03-2011, 06:26 AM
Powerstroke.org Fanatic
 
seawolfbronco's Avatar
 
Join Date: Sep 2006
Location: Lafayette, Louisiana
Posts: 133
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Most likely a bad alternator. You should check the wiring to the field, but most likely is a bad diode in the internal regulator of the alternator. It's probably still charging a little, but the voltage is down, especially at low RPMs.


2003Excursion 4x4 Eddie Bauer 6.0
Edge Insight CTS, Autometer Fuel Pressure Gauge w/Strictly Diesel sending unit hose, ELC, Sinister Coolant Filter, F650 dash conversion, High Idle mod, Donahoe Racing 4.5" lift, LT315/75R16 Toyo Open Country MT, Viair, Salvaged oil-rig horn
seawolfbronco is offline  
post #3 of 15 Old 03-03-2011, 06:30 AM Thread Starter
Powerstroke.org Fanatic
 
DieselFam's Avatar
 
Join Date: Mar 2009
Location: Minden, NV
Posts: 128
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Thanks Seawolf. I better get it off and have it checked. I had heard that you shouldn't have Autozone or Kragen do alternator tests because they only read if its really dead???? Have you heard this?
DieselFam is offline  
post #4 of 15 Old 03-03-2011, 06:38 AM
the baconator

 
terryknight's Avatar
 
Join Date: May 2009
Location: Easton MD 21601
Posts: 12,613
Thanks: 10
Thanked 120 Times in 114 Posts
Mentioned: 4 Post(s)
Quoted: 93 Post(s)
Feedback Score: 2 reviews
check to make sure all the wires going to the alt are tight

I had one flickering on a trip to and from MA and i found that I had a loose wire

94.5 F250 Reg Cab 4x4 5 speed 4.10 276000 plus miles

97 F350 Crew Cab LB 4x4 5 speed 3.55 320000 plus miles (parts truck)



Quote:
Originally Posted by alberta 7.3 View Post
YouTube: Providing idiots everywhere a podium to share their stupidity
terryknight is offline  
post #5 of 15 Old 03-03-2011, 06:42 AM
Powerstroke.org Fanatic
 
seawolfbronco's Avatar
 
Join Date: Sep 2006
Location: Lafayette, Louisiana
Posts: 133
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Well, considering the caliper of help in those places....they're not techs, just clerks, really. If you have a volt meter, just check the voltage. It should be putting out better than 13.5v at idle, if your batteries are fully charged (>12.5v key off). My Ex was doing the same thing. The batteries would not go fully dead, but the Alt light started to flicker. I had noticed that voltage at idle was low.


2003Excursion 4x4 Eddie Bauer 6.0
Edge Insight CTS, Autometer Fuel Pressure Gauge w/Strictly Diesel sending unit hose, ELC, Sinister Coolant Filter, F650 dash conversion, High Idle mod, Donahoe Racing 4.5" lift, LT315/75R16 Toyo Open Country MT, Viair, Salvaged oil-rig horn
seawolfbronco is offline  
post #6 of 15 Old 03-03-2011, 06:53 AM Thread Starter
Powerstroke.org Fanatic
 
DieselFam's Avatar
 
Join Date: Mar 2009
Location: Minden, NV
Posts: 128
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Thanks all. I will check tonight when I get home and post the results. I hope its just a loose wire. That alternator is only 20 months old.
DieselFam is offline  
post #7 of 15 Old 03-03-2011, 07:16 PM Thread Starter
Powerstroke.org Fanatic
 
DieselFam's Avatar
 
Join Date: Mar 2009
Location: Minden, NV
Posts: 128
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
No loose wires, so I guess I will pull the alternator and have it tested.
DieselFam is offline  
post #8 of 15 Old 03-04-2011, 03:53 AM
the baconator

 
terryknight's Avatar
 
Join Date: May 2009
Location: Easton MD 21601
Posts: 12,613
Thanks: 10
Thanked 120 Times in 114 Posts
Mentioned: 4 Post(s)
Quoted: 93 Post(s)
Feedback Score: 2 reviews
well that's too bad. hopefully it's under warranty

94.5 F250 Reg Cab 4x4 5 speed 4.10 276000 plus miles

97 F350 Crew Cab LB 4x4 5 speed 3.55 320000 plus miles (parts truck)



Quote:
Originally Posted by alberta 7.3 View Post
YouTube: Providing idiots everywhere a podium to share their stupidity
terryknight is offline  
post #9 of 15 Old 03-06-2011, 07:04 PM Thread Starter
Powerstroke.org Fanatic
 
DieselFam's Avatar
 
Join Date: Mar 2009
Location: Minden, NV
Posts: 128
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
So after checking for loose wires, which there weren't any, the light quit flickering. So I checked the plug in wires. All looked good. The light stayed out until today while on a 2 hour drive, when it started flickering lightly again. I checked the wires. All were still good. One thing I noticed was under hard acceleration the light was brightest and stayed on. If I were just cruising along it was a very dim flickering light. If I were coasting it was off. I am definetley taking for a test tomorrow. It is very puzzling though. Any ideas? In the past on different vehicles when that battery light comes on it stays on, bright. Belts are tight and battery cables are as well. If I have to get a new alternator, I would like to buy an American one, or at least North American one. Does anyone know of one made here. My local NAPA auto parts store only has chinese stuff. O'Reilly the same. I can't find any "made in" information for Motorcraft. So I would assume they aren't. That is usually big bragging rights if its made in America.
DieselFam is offline  
post #10 of 15 Old 03-07-2011, 03:40 AM
the baconator

 
terryknight's Avatar
 
Join Date: May 2009
Location: Easton MD 21601
Posts: 12,613
Thanks: 10
Thanked 120 Times in 114 Posts
Mentioned: 4 Post(s)
Quoted: 93 Post(s)
Feedback Score: 2 reviews
i like Bosch, but that's me. always had good luck, and i have no clue where they are actually made

94.5 F250 Reg Cab 4x4 5 speed 4.10 276000 plus miles

97 F350 Crew Cab LB 4x4 5 speed 3.55 320000 plus miles (parts truck)



Quote:
Originally Posted by alberta 7.3 View Post
YouTube: Providing idiots everywhere a podium to share their stupidity
terryknight 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