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

Curious

Thread Tools
 
Search this Thread
 
Old Mar 2, 2010 | 05:52 PM
  #1  
billabongboy's Avatar
billabongboy
Thread Starter
|
Senior User
Joined: May 2007
Posts: 222
Likes: 0
From: Kingsville MD
Curious

Evening everybody in the FTE forum! My truck is having another little problem right now and i was wondering if someone could point me in the right direction. When the truck is at idle the battery gauge deminishes and goes in the red. but when i get up on it it charges itself. i'm thinking its grounding out somewhere and i was wondering if there was a common place for a bad wire to just do that. Thanks, Christian
 
Reply
Old Mar 2, 2010 | 06:14 PM
  #2  
CPUNeck's Avatar
CPUNeck
Elder User
Joined: Dec 2009
Posts: 864
Likes: 0
From: Fort Campbell, KY
Originally Posted by billabongboy
Evening everybody in the FTE forum! My truck is having another little problem right now and i was wondering if someone could point me in the right direction. When the truck is at idle the battery gauge deminishes and goes in the red. but when i get up on it it charges itself. i'm thinking its grounding out somewhere and i was wondering if there was a common place for a bad wire to just do that. Thanks, Christian
One of the few times a gauge actually gives you an indication of a problem. Your regulator is probably on it's way out. Time for an alternator, or rebuild at the least.
 
Reply
Old Mar 2, 2010 | 08:47 PM
  #3  
DieselCamper01's Avatar
DieselCamper01
Fleet Owner
15 Year Member
Photogenic
Photoriffic
Shutterbug
Joined: Mar 2007
Posts: 28,306
Likes: 6
From: BLT, MN
I agree with Casper. You could take it to a parts store to be bench tested to make sure.
 
Reply
Old Mar 2, 2010 | 11:01 PM
  #4  
billabongboy's Avatar
billabongboy
Thread Starter
|
Senior User
Joined: May 2007
Posts: 222
Likes: 0
From: Kingsville MD
in my ignorance i have to ask this question. i thought that a alternator is either working or its not working is that true
 
Reply
Old Mar 2, 2010 | 11:09 PM
  #5  
billabongboy's Avatar
billabongboy
Thread Starter
|
Senior User
Joined: May 2007
Posts: 222
Likes: 0
From: Kingsville MD
also would a bad alternator not even let me charge the trucks batteries or make it almost impossible to jump start
 
Reply
Old Mar 2, 2010 | 11:29 PM
  #6  
cps's Avatar
cps
Laughing Gas
15 Year Member
Joined: Mar 2008
Posts: 967
Likes: 7
From: coquitlam,BC
What CPUneck said your alternator has a regulator which regulates the voltage so you don`t overcharge your batteries.If it is not putting out enough you will end up slowly discharging your batts. Alternators usually don`t suddenly stop working, generally they give you an indication, like you are having, that they are on their way out.It is probably a rectifier or diode that has gone bad in your case, but most auto shops can do a load test and tell you right away if your alternator is up to snuff.
 
Reply
Old Mar 2, 2010 | 11:34 PM
  #7  
billabongboy's Avatar
billabongboy
Thread Starter
|
Senior User
Joined: May 2007
Posts: 222
Likes: 0
From: Kingsville MD
thanks for the help everyone i know what i'm going to do tomorrow i guess i hope its that and nothing bigger
 
Reply
Old Mar 3, 2010 | 01:47 AM
  #8  
flatbeder's Avatar
flatbeder
Posting Guru
Joined: Oct 2009
Posts: 1,008
Likes: 0
From: Tonoph,AZ
Club FTE Silver Member

Just my .02 here also have yer batteries load tested aswell. You could have a bad battery? It would be a good time to do this then you know you got yer ducks in a row. Make sure to load test them indepently.
 
Reply
FTE Stories

Ford Trucks for Ford Truck Enthusiasts

story-0

This Hennessey Takes the Expedition Tremor's Off-Roading Capability to the Next Level

 Verdad Gallardo
story-1

Top 10 Fords at 2026 Carlisle Ford Nationals

 Joe Kucinski
story-2

3 Best / 3 Worst Parts of Modern Ford Ownership

 Brett Foote
story-3

10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches

 Pouria Savadkouei
story-4

Every 2026 Ford Engine Explained

 Brett Foote
story-5

10 Ugly Ford Trucks That We Still Kinda Love

 Joe Kucinski
story-6

10 Things Every Truck Owner NEEDS (2026 Edition)

 Michael S. Palmer
story-7

Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath

 Verdad Gallardo
story-8

Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer

 Joe Kucinski
story-9

2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)

 Brett Foote
Old Mar 3, 2010 | 05:51 AM
  #9  
CPUNeck's Avatar
CPUNeck
Elder User
Joined: Dec 2009
Posts: 864
Likes: 0
From: Fort Campbell, KY
Originally Posted by flatbeder
Just my .02 here also have yer batteries load tested aswell. You could have a bad battery? It would be a good time to do this then you know you got yer ducks in a row. Make sure to load test them indepently.
Yep, Joe has a good point... a battery on its way out can "take" your alternator with it. Stinks I know, but just how it is. If I were you, I chalk it up to good luck. Seems every time I loose an alternator, I'm miles from home, it's dark, snowing, Saturday of a holiday weekend... you get the idea.
 
Reply
Old Mar 3, 2010 | 09:17 AM
  #10  
Kwikkordead's Avatar
Kwikkordead
Fleet Owner
Shutterbug
Liked
Loved
Community Favorite
Joined: Jun 2004
Posts: 25,090
Likes: 1,112
From: Rio Rico, AZ.
Worn out brushes inside the alternator.
 
Reply
Old Mar 3, 2010 | 01:51 PM
  #11  
billabongboy's Avatar
billabongboy
Thread Starter
|
Senior User
Joined: May 2007
Posts: 222
Likes: 0
From: Kingsville MD
Thanks for your help everybody. everyone on this site has been such a huge. i have just one more question, how long would it take the alternator to charge two batteries?
 
Reply
Old Mar 3, 2010 | 03:43 PM
  #12  
flatbeder's Avatar
flatbeder
Posting Guru
Joined: Oct 2009
Posts: 1,008
Likes: 0
From: Tonoph,AZ
Club FTE Silver Member

The alternator will not charge the batteries. The alternators job is to keep the batteries charged. I'm sure the local parts store in your area will beable to charge your batteries for free of charge. another thing you could do is go to your Maryland chapter and ask some local guys if they have a trickle charger you could use/borrow etc...
 
Reply
Old Mar 5, 2010 | 05:24 AM
  #13  
Kwikkordead's Avatar
Kwikkordead
Fleet Owner
Shutterbug
Liked
Loved
Community Favorite
Joined: Jun 2004
Posts: 25,090
Likes: 1,112
From: Rio Rico, AZ.
Originally Posted by flatbeder
The alternator will not charge the batteries. The alternators job is to keep the batteries charged. I'm sure the local parts store in your area will beable to charge your batteries for free of charge. another thing you could do is go to your Maryland chapter and ask some local guys if they have a trickle charger you could use/borrow etc...
Not trying to start an argument here, but the alternators job includes bringing a low battery back up to charged.
It won't bring a dead battery back unless it get's jumped by another vehicle.
 
Reply
Old Mar 5, 2010 | 12:24 PM
  #14  
flatbeder's Avatar
flatbeder
Posting Guru
Joined: Oct 2009
Posts: 1,008
Likes: 0
From: Tonoph,AZ
Club FTE Silver Member

Dan, if I ever argue with you...then I have got to big for my britches! Trust me when you talk I listen.
 
Reply




All times are GMT -5. The time now is 07:15 AM.

story-0
This Hennessey Takes the Expedition Tremor's Off-Roading Capability to the Next Level

Slideshow: The VelociRaptor Expedition gains a lift, upgraded suspension, Brembo brakes, and trail-ready equipment while retaining the stock 440-horsepower EcoBoost V6.

By Verdad Gallardo | 2026-06-12 11:01:55


VIEW MORE
story-1
Top 10 Fords at 2026 Carlisle Ford Nationals

Slideshow: Top 10 Fords at 2026 Ford Nationals

By Joe Kucinski | 2026-06-09 11:10:08


VIEW MORE
story-2
3 Best / 3 Worst Parts of Modern Ford Ownership

Based on years of owning multiple modern Ford products.

By Brett Foote | 2026-06-09 10:53:36


VIEW MORE
story-3
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches

SPONSORED: From muddy boots to rain-soaked cargo, these upgrades address some of the most common frustrations Ford truck owners face every day.

By Pouria Savadkouei | 2026-06-08 18:50:34


VIEW MORE
story-4
Every 2026 Ford Engine Explained

Here's everything you need to know about every Ford engine available for the 2026 model year.

By Brett Foote | 2026-06-05 12:58:01


VIEW MORE
story-5
10 Ugly Ford Trucks That We Still Kinda Love

Slideshow: 10 ugly Ford trucks that we still kinda love.

By Joe Kucinski | 2026-06-03 09:51:16


VIEW MORE
story-6
10 Things Every Truck Owner NEEDS (2026 Edition)

Slideshow: the best gifts for dads & grads

By Michael S. Palmer | 2026-06-03 15:43:58


VIEW MORE
story-7
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath

Slideshow: Called the Fortress, the 850-horsepower pickup combines Raptor underpinnings with military-inspired features, survival equipment, and a starting price of $285,000.

By Verdad Gallardo | 2026-06-03 11:38:36


VIEW MORE
story-8
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer

Slideshow: 10 most expensive Ford trucks ever sold on Bring a Trailer.

By Joe Kucinski | 2026-05-27 16:24:34


VIEW MORE
story-9
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)

Here's everything that has changed for the latest model year.

By Brett Foote | 2026-05-27 16:17:28


VIEW MORE