Notices
1999 - 2003 7.3L Power Stroke Diesel  
Sponsored by:
Sponsored by: DP Tuner

Battery Light blinking???????

Thread Tools
 
Search this Thread
 
Old Dec 27, 2011 | 07:30 PM
  #1  
caverjoe's Avatar
caverjoe
Thread Starter
|
Laughing Gas
15 Year Member
Photogenic
Joined: Apr 2007
Posts: 1,238
Likes: 2
From: North Port, Florida
Battery Light blinking???????

Not sure what is wrong here. there is no pattern to it. the battery light will come on whenever it feels like it and run the gauge up to the top of the operating range. It even makes the headlights brighter when it does it. I am thinking a short in a wire or loose ground, but dont know where to begin. I cleaned and tightened the battery terminals, and even though it cranks alot better now the battery light still acts up at will.
Any ideas????
Thanks
Joe
 
Reply
Old Dec 27, 2011 | 08:28 PM
  #2  
BigAlsPSD's Avatar
BigAlsPSD
Post Fiend
Joined: May 2009
Posts: 5,470
Likes: 3
From: Pea Ridge, AR
Club FTE Gold Member
I would have the alternator tested. Sounds like a bad regulator.
 
Reply
Old Dec 27, 2011 | 08:28 PM
  #3  
DND58's Avatar
DND58
Laughing Gas
15 Year Member
Joined: Jan 2007
Posts: 870
Likes: 9
From: Carbondale, CO
Sounds like an alternator going out, and putting out to much voltage. Can you measure it with a meter when it's acting up?
 
Reply
Old Dec 27, 2011 | 08:48 PM
  #4  
caverjoe's Avatar
caverjoe
Thread Starter
|
Laughing Gas
15 Year Member
Photogenic
Joined: Apr 2007
Posts: 1,238
Likes: 2
From: North Port, Florida
I never know when it is going to act up and I dont remember it ever happening when I am setting still. Usually going down the road. I was wondering about the alt., but not sure how I would check it if it was not acting up.
I checked it when I cleaned and tightened up the posts, and was getting like 14.4V if i remember right. maybe I will just throw a new alt. at it and see if that works.
Which one and where is the best alt to purchase?
Thanks
 
Reply
Old Dec 27, 2011 | 09:34 PM
  #5  
DND58's Avatar
DND58
Laughing Gas
15 Year Member
Joined: Jan 2007
Posts: 870
Likes: 9
From: Carbondale, CO
Not sure what alt is best. 14.4 volts sounds about right. Many talk of the wiring clip coming out the top of the alt being loose or bad grounds. Original alt? If your batts and connections are good, might look into this.

Amazon.com: Equus 3721 Battery and Charging System Monitor: Automotive
 
Reply
Old Dec 27, 2011 | 09:56 PM
  #6  
2000ca250's Avatar
2000ca250
Posting Guru
Joined: Aug 2009
Posts: 1,025
Likes: 0
From: ellensburg
this is exactly what mine did before it went out. Check it now and fix it before it takes both batteries with it or worse yet leaves you stranded on the side of the road 100+ miles from home (ask me how i know) lol
 
Reply
Old Dec 28, 2011 | 12:03 AM
  #7  
Lvuserhere's Avatar
Lvuserhere
New User
Joined: Dec 2011
Posts: 1
Likes: 0
Same problem....pulley size?

Hi all.
I have the same problem.
Diagnosed it to the alternator.
The one I have is a remanufactured one and I do not know what the oem pulley size is on the alternator.

Can someone who has an oem alternator tell me what the pulley diameter is?

I have a 2001 7.3 diesel. F350.

Thanks!
Mike
 
Reply
Old Dec 28, 2011 | 07:08 AM
  #8  
caverjoe's Avatar
caverjoe
Thread Starter
|
Laughing Gas
15 Year Member
Photogenic
Joined: Apr 2007
Posts: 1,238
Likes: 2
From: North Port, Florida
Not original and unfortunately I know how u know. Not quite 100 miles from home but far enough. My own just went out one night with no warnings headlights faded and then nothing.
well thanks for the tips
 
Reply
FTE Stories

Ford Trucks for Ford Truck Enthusiasts

story-0

Top 10 Ford Truck Tragedies

 Joe Kucinski
story-1

AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make

 Brett Foote
story-2

Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!

 Michael S. Palmer
story-3

Ford's 2001 Explorer Sportsman Concept Looks For a New Home

 Verdad Gallardo
story-4

10 Best Ford Truck Engines We Miss the Most!

 Joe Kucinski
story-5

2026 Shelby F-150 Off-Road: Better Than a Raptor R?

 Brett Foote
story-6

2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!

 Michael S. Palmer
story-7

10 Most Surprising 2026 Ford Truck Features!

 Joe Kucinski
story-8

Top 10 Ford Trucks Coming to Mecum Indy 2026

 Brett Foote
story-9

5 Best / 5 Worst Ford Truck Wheels of All Time

 Joe Kucinski
Old Dec 28, 2011 | 07:11 AM
  #9  
caverjoe's Avatar
caverjoe
Thread Starter
|
Laughing Gas
15 Year Member
Photogenic
Joined: Apr 2007
Posts: 1,238
Likes: 2
From: North Port, Florida
Replacement. Alt is a probably the a couple. Years old
 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Jly154
1987 - 1996 F150 & Larger F-Series Trucks
1
Aug 22, 2015 08:36 AM
andym
Excursion - King of SUVs
9
May 19, 2015 07:37 PM
jjarboe01
1987 - 1996 F150 & Larger F-Series Trucks
3
Mar 8, 2010 11:35 PM
indebt
1999 - 2016 Super Duty
20
Aug 29, 2007 06:55 AM
j_n_l
1997 - 2006 Expedition & Navigator
2
Jul 20, 2006 06:48 AM




All times are GMT -5. The time now is 11:59 PM.

story-0
Top 10 Ford Truck Tragedies

Slideshow: Top 10 Ford truck tragedies.

By Joe Kucinski | 2026-05-18 19:34:33


VIEW MORE
story-1
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make

And it might be even better than that.

By Brett Foote | 2026-05-18 19:26:42


VIEW MORE
story-2
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!

Slideshow: Does lowering an F-150 Lobo RUIN the ride quality?

By Michael S. Palmer | 2026-05-18 19:20:37


VIEW MORE
story-3
Ford's 2001 Explorer Sportsman Concept Looks For a New Home

Slideshow: Ford's bizarre fishing-themed Explorer concept has resurfaced after spending decades largely forgotten.

By Verdad Gallardo | 2026-05-12 18:07:46


VIEW MORE
story-4
10 Best Ford Truck Engines We Miss the Most!

Slideshow: The 10 best Ford truck engines we miss the most.

By Joe Kucinski | 2026-05-12 13:09:47


VIEW MORE
story-5
2026 Shelby F-150 Off-Road: Better Than a Raptor R?

Slideshow: first look at the 810 hp 2026 Shelby F-150 Off-Road!

By Brett Foote | 2026-05-12 12:50:07


VIEW MORE
story-6
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!

Slideshow: Everything You Need to Know about the 2027 Super Duty Carhartt Package!

By Michael S. Palmer | 2026-05-07 17:51:06


VIEW MORE
story-7
10 Most Surprising 2026 Ford Truck Features!

Slideshow: 10 most surprising Ford truck options/features in 2026.

By Joe Kucinski | 2026-05-05 11:17:22


VIEW MORE
story-8
Top 10 Ford Trucks Coming to Mecum Indy 2026

Slideshow: Here are the top 10 Fords coming to Mecum Indy 2026.

By Brett Foote | 2026-05-04 13:49:49


VIEW MORE
story-9
5 Best / 5 Worst Ford Truck Wheels of All Time

Slideshow: The 5 best and 5 worst Ford truck wheels of all time

By Joe Kucinski | 2026-04-29 16:49:01


VIEW MORE