Go Back   Ford Truck Enthusiasts Forums > Misc. > Electrical Systems/Wiring
Sign in using an external account
Register Forgot Password?


Welcome to Ford-Trucks Forums!
Welcome to Ford-Trucks.com.

You are currently viewing our forums as a guest, which gives you limited access to view most discussions and access our other features. By joining our community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join the Ford-Trucks Forums community today!





 
Reply
 
 
 
 
LinkBack Thread Tools Search this Thread
  #1  
Old 12-03-2003, 09:17 PM
salewit salewit is offline
Junior User
 
Join Date: May 2003
Posts: 60
salewit is starting off with a positive reputation.
Troubleshooting a charging system

Hi. I have an 84 F250 1ton Diesel (dual batteries).

What would be the procedure on checking a charging system? I'm not 100% sure the system is charging properly. I ran the batteries down the other day on a cold morning, and had the same situation a couple more times. The batteries I know to be good (both 6 months old, both took a charge).

When I volt test the fully charged batteries with the engine OFF, I get about 13.8 volts. After using the vehicle at night for about 30 minutes, then checking the next day with the engine running, I get about 11.7 volts at the batteries. Shouldn't the alternator be kicking the voltage up to about 14+ volts?

I've been putting the truck on the trickle charger every night for the past week for fear of getting stranded somewhere.

What is the next step short of removing the alternator and regulator? Do I test the voltage between the field connector and ground on the alternator?

I know this question has been asked before, but the system wouldn't allow me to do a search (server busy message).

Thanks
Sam
Reply With Quote
  #2  
Old 12-04-2003, 03:01 AM
Mike W's Avatar
Mike W Mike W is offline
Post Fiend
 
Join Date: Apr 2002
Location: Central Kali
Posts: 7,157
Mike W is starting off with a positive reputation.
Yeah, you should be getting around 14 volts at a fast idle. Check the voltage at the field terminal to ground. If you have about 11 volts, the alternator is bad. If you have 0 volts, the regulator or wiring is bad.
__________________
FTE: You can check out but you can never leave.
Reply With Quote
Old 12-04-2003, 03:01 AM
 
 
 
Reply

Go Back   Ford Truck Enthusiasts Forums > Misc. > Electrical Systems/Wiring

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 On
Trackbacks are On
Pingbacks are On
Refbacks are On

Forum Jump



All times are GMT -5. The time now is 09:57 PM.


Powered by vBulletin® Version 3.8.7 AC1
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Advertising - Terms of Use - Privacy Statement - Jobs
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.

vbulletin Admin Backup