Rising Sun Member Forums  

Go Back   Rising Sun Member Forums > Toyota 4x4 > General Tech Forum

Reply
 
Thread Tools
  #1  
Old 11-17-2006, 01:14 PM
PabloCruise's Avatar
PabloCruise PabloCruise is offline
Rising Sun Member
 
Join Date: Aug 2005
Location: Northern CO
Posts: 1,735
Question A little charging system help?

O-k, so things are not groovy with my charging system...

Problem: after sitting for ~ 1 week, the battery was damn near dead.

Background: '78 40 w/ stock charging system. I gave the 40 a nice long drive before leaving it sit while my son was born. Before I went w/ the solid state voltage regulator, my battery was draining overnight. I surmised that the VR was fielding the alternator overnight and doing this. So I got a points type VR, and then a week later switched to the SS VR. Battery stopped draining overnight.

One thing that concerns me is that after I got the 40 started, the Amp meter was not pegged, or showing vigorous charging activity... It was sitting just above the middle line on stock amp meter. When I hooked it up to a trickle charger, it drew 8 and then 6 amps for the better part of a day. Battery now acts fully charged.

In my feeble little mind, this means to me that either the VR is not calling for a charge, or my alternator is no longer putting out - correct?

Would step one be to fully field the alternator and measure output? If so, how do I fully field my stocker 40, external VR alternator?

Thanks!
__________________
TJS

1978 FJ-40
1974 FJ-55 w/ 3FE

TLCA #10713

CO/WY Horsetooth 4 Wheelers Cruiser Club - Click Here!
Reply With Quote
  #2  
Old 11-17-2006, 01:35 PM
nakman's Avatar
nakman nakman is offline
Rising Sun Commander
 
Join Date: Aug 2005
Location: north side
Posts: 9,883
Default

I've always thought the easiest test of an alternator is to just disconnect the battery while the truck is running. If it keeps running, your alternator works. If it dies, it doesnt'. It's a start at least..
__________________
99 uzj100, 05 525EXC

www.gamiviti.com

Reply With Quote
  #3  
Old 11-17-2006, 02:00 PM
FJBen's Avatar
FJBen FJBen is offline
Hard Core 4+
 
Join Date: Aug 2005
Posts: 893
Default

Quote:
Originally Posted by PabloCruise

In my feeble little mind, this means to me that either the VR is not calling for a charge, or my alternator is no longer putting out - correct?

Thanks!
I hate it when then don't put out anymore...oh wait...the alternator

Just take the alternator and have it tested, easy and free. And then you know, cause knowing is half the battle!

__________________
TLCA#15530

96 285's OME 's ride
Reply With Quote
  #4  
Old 11-17-2006, 03:58 PM
PabloCruise's Avatar
PabloCruise PabloCruise is offline
Rising Sun Member
 
Join Date: Aug 2005
Location: Northern CO
Posts: 1,735
Default

Quote:
Originally Posted by FJBen
I hate it when then don't put out anymore...oh wait...the alternator

Ha! I was wondering if that would divert the conversation...
__________________
TJS

1978 FJ-40
1974 FJ-55 w/ 3FE

TLCA #10713

CO/WY Horsetooth 4 Wheelers Cruiser Club - Click Here!
Reply With Quote
  #5  
Old 11-17-2006, 07:23 PM
60wag's Avatar
60wag 60wag is offline
Rising Sun Member
 
Join Date: Aug 2005
Posts: 1,777
Default

With some charging systems I think you can trash the voltage regulator by disconnecting the battery while running. x2 on the get the alt tested with a an alt testing device.
Reply With Quote
Reply

Thread Tools

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


All times are GMT -6. The time now is 02:54 AM.


Powered by vBulletin® Version 3.7.1
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.