Alternator - Hot Rod Forum : Hotrodders Bulletin Board
Hotrodders.com -- Hot Rod Forum



Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Electrical
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #1 (permalink)  
Old 02-09-2004, 07:46 PM
Member
 
Last photo:
Join Date: Sep 2003
Location: canada
Age: 39
Posts: 132
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Alternator

I have an 84 GMC Truck. My alternator does not appear to be charging the battery. It is not making any noise. Is their a way to check an alternator to see if it charges????????????????????

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 02-09-2004, 08:45 PM
daubs's Avatar
Registered User
 
Join Date: Nov 2003
Location: santa rosa, ca
Age: 31
Posts: 7
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
take it down to your local kragen (or checker, schucks or whatever ya got) and they'll bench test it for free. if the truck's running pretty reliably drive the whole thing down and they'll test your whole charging system to see if 1) the alternator is working right, and 2) what charge is getting back to your battery. that way you'll know if you might have a problem somewhere else in your system.
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 02-10-2004, 05:55 AM
Wrencher's Avatar
Member
 
Last photo:
Join Date: Aug 2003
Location: cincinnati
Age: 56
Posts: 607
Wiki Edits: 0

Thanks: 5
Thanked 0 Times in 0 Posts
You could just disconnect the neg batt cable while it's running, if it dies, it's not charging!
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 02-10-2004, 08:43 PM
302 Z28's Avatar  
Last photo:
Join Date: May 2003
Location: North Texas
Posts: 10,839
Wiki Edits: 0

Thanks: 1
Thanked 86 Times in 73 Posts
Quote:
Originally posted by Wrencher
You could just disconnect the neg batt cable while it's running, if it dies, it's not charging!
Unless the battery has enough life left to keep it running.

Vince
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 02-11-2004, 05:55 AM
Wrencher's Avatar
Member
 
Last photo:
Join Date: Aug 2003
Location: cincinnati
Age: 56
Posts: 607
Wiki Edits: 0

Thanks: 5
Thanked 0 Times in 0 Posts
Vince

No offense, but the batt is disconnected, you can start the car, throw the batt in the garbage, and if the alt is charging, you can drive all day!
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 02-12-2004, 11:40 PM
Registered User
 
Join Date: Feb 2004
Location: OR
Age: 38
Posts: 4
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
check the voltage at the batt. <=12.6 no alt >12.6 good alt
dissconect your batt with engine running for a long time and fry things . try it and check voltage at alt. no 12v sense for regulator and alt. voltage goes sky high.
Reply With Quote Quick reply to this message
  #7 (permalink)  
Old 02-13-2004, 11:45 AM
Wrencher's Avatar
Member
 
Last photo:
Join Date: Aug 2003
Location: cincinnati
Age: 56
Posts: 607
Wiki Edits: 0

Thanks: 5
Thanked 0 Times in 0 Posts
Philly

I did get a little carried away, but , my point was, batt state of charge has nothing to do with how long it would run disconnected! Hope he's not drivin w/o it?
Reply With Quote Quick reply to this message
  #8 (permalink)  
Old 02-18-2004, 08:49 PM
Member
 
Last photo:
Join Date: Sep 2003
Location: canada
Age: 39
Posts: 132
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Thanks guys I traced it to a burnt connection on the positive connection. I replaced the bolt with a regular bolt that was black and when I fired it up the gauge goes to like 8 volts and I wants to die as I have an electronic choke. Can I use a regular brass bolt or do I need the actual bolt?

ps..how are the springs supposed to go in and are they supposed to touch against the shaft?
Reply With Quote Quick reply to this message
  #9 (permalink)  
Old 02-19-2004, 05:13 AM
Wrencher's Avatar
Member
 
Last photo:
Join Date: Aug 2003
Location: cincinnati
Age: 56
Posts: 607
Wiki Edits: 0

Thanks: 5
Thanked 0 Times in 0 Posts
Not sure which bolt you're workin with? Alt b+ bolt?, you may want to check all the other components inside if you had a burnt connection, or replace the alt? The springs go in behind the brushes, and are held in with a paper clip type wire, thru the back of the housing, pull the wire out after assembly! HTH
Reply With Quote Quick reply to this message
  #10 (permalink)  
Old 02-19-2004, 09:24 PM
Member
 
Last photo:
Join Date: Sep 2003
Location: canada
Age: 39
Posts: 132
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Done deal. Thanks Guys. I replaced the positive terminal and put in a new set off brushes and the back bearing. She runs great again. Thanks for the time and knowledge.
Reply With Quote Quick reply to this message

Recent Electrical posts with photos

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may post new threads
You may 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



All times are GMT -6. The time now is 05:08 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.