New Alternator and new battery wont charge or hold charge - Ford Truck Enthusiasts Forums



1997 - 2003 F150 1997-2003 F150, 1997-1999 F250LD, 7700 & 2004 F150 Heritage

New Alternator and new battery wont charge or hold charge

Reply
 
 
 
LinkBack Thread Tools Search this Thread
  #1  
Old 12-05-2009, 11:11 AM
camsford camsford is offline
New User
Thread Starter
 
Join Date: Dec 2009
Posts: 2
camsford is starting off with a positive reputation.
New Alternator and new battery wont charge or hold charge

I have a 1999 Ford F-250 started off with battery going dead so checked alternator and battery and found out the alternaor was done so put in a new one and that didnt fix the problem so then figured new battery so tried that and also problem not solve so theirs a brand new alternator from ford and new mastercraft battery anyone know what could be wrong.
Reply With Quote
  #2  
Old 12-05-2009, 01:16 PM
96f150's Avatar
96f150 96f150 is offline
Posting Guru
 
Join Date: Nov 2000
Location: In my House
Posts: 1,536
96f150 is starting off with a positive reputation.
Did you check your Maxi-Fuses under the hood?
Reply With Quote
  #3  
Old 12-05-2009, 02:12 PM
eallanboggs eallanboggs is offline
Elder User
 
Join Date: Jan 2008
Posts: 605
eallanboggs is starting off with a positive reputation.
Have you checked parasitic draw. It should be under 50mAmp once the modules fall asleep
Reply With Quote
  #4  
Old 12-05-2009, 04:46 PM
ddelong ddelong is offline
New User
 
Join Date: Nov 2009
Posts: 12
ddelong is starting off with a positive reputation.
I just changed the alternator on my 99 Ford F150 and there are 3 connections to the alternator from the battery. One is an eyelet with a stud and nut and that would be easy. The other is a plug that cannot be placed incorrectly but the 3rd is a single wire connector. Maybe it is not connected???

The voltage regulator is integrated into the alternator so that couldn't be the culprit.

If it is not the cable connections, it could be in the cables from the alternator to the battery. One could be broken.
Reply With Quote
  #5  
Old 12-05-2009, 06:42 PM
steve(ill)'s Avatar
steve(ill) steve(ill) is offline
Post Fiend
 
Join Date: Jul 2005
Posts: 8,222
steve(ill) has a great reputation on FTE.steve(ill) has a great reputation on FTE.steve(ill) has a great reputation on FTE.steve(ill) has a great reputation on FTE.
charge the battery full.
measure the battery to be 12.8 volts
start the truck and measure the battery voltage to go up to 14 volts.
if it does, you battery is crap or you have a big electrical leak when motor is off.
if it dont charge 14 volts, then alternator is crap, or not connected.
Reply With Quote
  #6  
Old 12-05-2009, 07:28 PM
pullenpoynt pullenpoynt is offline
New User
 
Join Date: Oct 2003
Location: boston
Posts: 18
pullenpoynt is starting off with a positive reputation.
have you cleaned your terminals so they are shiny and bright
Reply With Quote
  #7  
Old 12-05-2009, 08:04 PM
eallanboggs eallanboggs is offline
Elder User
 
Join Date: Jan 2008
Posts: 605
eallanboggs is starting off with a positive reputation.
Parasitic draw can be no higher than 50mAmp. As little as a few hundred mAmps will pull a fully charged batteries down in a few hours. If you've replaced the parts you say you have(some multiple times) you need to look for parasitic draw.
Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
New alternator not charging batteries bluzzer 1999 to 2016 Super Duty 58 11-01-2016 12:43 PM
alternator issues/battery dieing 1984fordf150 1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks 9 04-28-2012 03:32 AM
1983 F-150 Charging system Problems Ballerforlife911 1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks 16 02-18-2010 07:46 PM
New Alternator and new battery wont charge or hold charge camsford 1999 to 2016 Super Duty 3 12-05-2009 12:30 PM
having trouble with charge from alternator to battery twowheledfreak 1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks 5 10-19-2004 08:21 PM


Go Back   Ford Truck Enthusiasts Forums >

Tags
1997, 91, 99, alternater, alternator, alternators, battery, charge, charging, explorer, f150, ford, hold, problems, truck, wont

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not 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

Forum Jump


All times are GMT -5. The time now is 06:18 PM.


This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. FordŽ is a registered trademark of the Ford Motor Company.