Notices
1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

lossing charge sometimes.please help

Thread Tools
 
Search this Thread
 
Old Nov 29, 2011 | 04:55 PM
  #1  
joekacker's Avatar
joekacker
Thread Starter
|
Junior User
Joined: Jun 2011
Posts: 73
Likes: 0
From: Everett Washing
lossing charge sometimes.please help

I was driving this morning and all off a sudden my battery light came on, If Im going under 20 its charges like normal, when I pick up speed like anywhere from 35 and up it drops down and the light comes on? and the heater cuts down to nothing, Is this my alternator or something else?> all battery and grounds are tight. and belt is tight? any ideas? and is the votalge regulator in the alternator or is it a box off the side like the chevys?>

91 150 302
 
Reply
Old Nov 29, 2011 | 06:24 PM
  #2  
rla2005's Avatar
rla2005
Fleet Owner
20 Year Member
Community Builder
Liked
Community Favorite
Joined: Oct 2005
Posts: 20,781
Likes: 1,747
From: Kentucky
The regulator is internal to the alternator. Take the alternator off and have it tested. Still very odd that the faster you go the worse it gets, but stranger things have happened.
 
Reply
Old Nov 29, 2011 | 06:28 PM
  #3  
droff85's Avatar
droff85
Senior User
Joined: Jan 2007
Posts: 103
Likes: 0
From: ms
My dads 94 would just decide to turn the battery light on but it never really gave us any problems other than that. Eventually the alternator just went out. I would say to have the alternator tested.
 
Reply
Old Nov 29, 2011 | 07:23 PM
  #4  
White 97 xlt's Avatar
White 97 xlt
Postmaster
Joined: Aug 2005
Posts: 4,728
Likes: 8
From: Cleveland, TN
I actually saw one with a bad regulator that was charging FULL all the time, it would make the light come on when reved up...
 
Reply
Old Nov 29, 2011 | 07:38 PM
  #5  
joekacker's Avatar
joekacker
Thread Starter
|
Junior User
Joined: Jun 2011
Posts: 73
Likes: 0
From: Everett Washing
thanks boys. I just went for it, and changed the alternator, It used to charge way up in the 15 16 area now its lower, I dont know, All i know is its fixed, now, it may not be chargong up in the top, but its charging. maybe ill throw my group 27 deep cycle in.

thanks again,
 
Reply
Old Nov 30, 2011 | 11:02 AM
  #6  
bobbyjo9's Avatar
bobbyjo9
Senior User
Joined: Jul 2010
Posts: 215
Likes: 0
If you were truely charging in the 15~16 volts you were over charging and would boil the battery. High 13's to low 14ish is fine. Deep cycles dont make good starting batteries.
 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Diverdan0430
1961 - 1966 F-100 & Larger F-Series Trucks
10
Jun 19, 2017 02:30 PM
2danglong
1999 - 2016 Super Duty
15
Mar 2, 2011 01:32 PM
sls985
Ford Inline Six, 200, 250, 4.9L / 300
2
Mar 27, 2003 07:28 PM
mchild
Electrical Systems/Wiring
2
Sep 29, 2002 01:29 AM
mike
1973 - 1979 F-100 & Larger F-Series Trucks
2
Nov 9, 1999 02:25 AM




All times are GMT -5. The time now is 07:00 AM.

story-0
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-1
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-2
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-3
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-4
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-5
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-6
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
story-7
Ford Super Duty: 5 Things Owners LOVE, 5 Things They LOATHE!

Slideshow: Ranking the 5 things owners love about their Super Duty and 5 things they don't

By Joe Kucinski | 2026-04-29 16:36:49


VIEW MORE
story-8
Every 2026 Ford Truck Engine RANKED from WORST to FIRST!

Slideshow: Ranking all 12 Ford truck engines available in 2026.

By Michael S. Palmer | 2026-04-22 13:32:20


VIEW MORE
story-9
The Best F-150 Deal of Every Trim Level (XL through Raptor)

Slideshow: The best Ford F-150 deal for every trim level (XL through Raptor)

By Joe Kucinski | 2026-04-21 15:59:01


VIEW MORE