Random charging issue - Defender Source
Defender Source  

Go Back   Defender Source > Defender & Series Technical Discussions > Defender Technical Discussions


Reply
 
Thread Tools
  #1  
Old December 29th, 2015, 12:53 PM
Uncle Douglas's Avatar
Uncle Douglas
Status: Offline
Doug Crowther
A defender in every driveway-motto
D-90 Source Vendor
 
Join Date: Dec 2007
Location: Gods Country- Central Virginia
Posts: 11,831
Registry
Random charging issue

I have a 94 classic with 4.2. For all intensive purposes the same exact setup as the 93,94,95 NAS trucks. I was recently 85 miles from home and the charge light came on. I tried the usual like revving the engine and the light stayed on. I was able to drive all the way home through the mountains with headlights and wipers on. The next morning I put a new alternator I had from Rovers North on the truck. When I hooked the battery back up that alternator made a hum. I started the truck and the light went out and I turned it off and the hum was gone. Its been 4 days and the truck still starts and runs fine but I have another problem. I have twice now gone out to the truck and found the charge lamp on when the truck wasn't running. Its got me buffalo'd. The truck still starts and runs but seemingly if the light is on I'm discharging ?
__________________
Good judgement comes from experience,experience comes from bad judgement.

Dividing Creek Imports
Worldwide Vehicle Shipment and Importation Service
Restoration & Modification work


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

410.693.1391


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Reply With Quote
Sponsored Links
Advertisement
 
  #2  
Old December 29th, 2015, 01:52 PM
xjahx's Avatar
xjahx
Status: Offline
JAH
'93 NAS 110, '94 NAS ST, '85 90 PU
Member
 
Join Date: Aug 2012
Location: MVY, ACK
Posts: 473
Registry
-Does the voltage of the battery drop over the period that this light is on without the truck running? Sounds like it would be discharging as you suspect.
-Easy solution, install a battery kill switch but that does not address the problem.
-And as with 99.9% of all electrical issues on these trucks, check for a bad ground.
Reply With Quote
  #3  
Old December 29th, 2015, 03:13 PM
NPT90's Avatar
NPT90
Status: Offline
JT
D90 óriginalé
Member
 
Join Date: Apr 2011
Location: DC/MD
Posts: 2,772
Registry
Quote:
Originally Posted by Uncle Douglas View Post
I have a 94 classic with 4.2. For all intensive purposes the same exact setup as the 93,94,95 NAS trucks. I was recently 85 miles from home and the charge light came on. I tried the usual like revving the engine and the light stayed on. I was able to drive all the way home through the mountains with headlights and wipers on. The next morning I put a new alternator I had from Rovers North on the truck. When I hooked the battery back up that alternator made a hum. I started the truck and the light went out and I turned it off and the hum was gone. Its been 4 days and the truck still starts and runs fine but I have another problem. I have twice now gone out to the truck and found the charge lamp on when the truck wasn't running. Its got me buffalo'd. The truck still starts and runs but seemingly if the light is on I'm discharging ?
Check the battery terminals; my truck had a bolt through a weld terminal and that caused a charging issue
Reply With Quote
Sponsored Links
Advertisement
 
  #4  
Old December 29th, 2015, 03:21 PM
Uncle Douglas's Avatar
Uncle Douglas
Status: Offline
Doug Crowther
A defender in every driveway-motto
D-90 Source Vendor
 
Join Date: Dec 2007
Location: Gods Country- Central Virginia
Posts: 11,831
Registry
Alternator is grounded as it is bolted to the block. Battery terminals in good condition as battery is also new. I haven't left the truck unattended long enough to see if this malady will discharge the battery, yet anyway.
__________________
Good judgement comes from experience,experience comes from bad judgement.

Dividing Creek Imports
Worldwide Vehicle Shipment and Importation Service
Restoration & Modification work


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

410.693.1391


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Reply With Quote
  #5  
Old December 29th, 2015, 03:35 PM
RovingRyan's Avatar
RovingRyan
Status: Offline
Ryan Phelps
84 LHD 110
Member
 
Join Date: Sep 2011
Location: PNW
Posts: 276
Registry
Diode in the alt? This is exactly how mine failed on my 200tdi.
__________________
Ryan
84 110SW County LHD
07 L322 Vogue
Reply With Quote
  #6  
Old December 29th, 2015, 03:42 PM
Uncle Douglas's Avatar
Uncle Douglas
Status: Offline
Doug Crowther
A defender in every driveway-motto
D-90 Source Vendor
 
Join Date: Dec 2007
Location: Gods Country- Central Virginia
Posts: 11,831
Registry
I'm thinking it is a diode or short in the new alternator, called Drew and he concurs.

Calling Zack....
__________________
Good judgement comes from experience,experience comes from bad judgement.

Dividing Creek Imports
Worldwide Vehicle Shipment and Importation Service
Restoration & Modification work


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

410.693.1391


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Reply With Quote
  #7  
Old December 29th, 2015, 05:57 PM
evilfij's Avatar
evilfij
Status: Offline
evilfij
I have never seen a rover in person
Member
 
Join Date: Oct 2003
Location: on the internet
Posts: 14,688
Does the 94 have the fusible links? Those go bad too.
__________________
*not legal advice*
Reply With Quote
  #8  
Old December 29th, 2015, 07:19 PM
Uncle Douglas's Avatar
Uncle Douglas
Status: Offline
Doug Crowther
A defender in every driveway-motto
D-90 Source Vendor
 
Join Date: Dec 2007
Location: Gods Country- Central Virginia
Posts: 11,831
Registry
Quote:
Originally Posted by evilfij View Post
Does the 94 have the fusible links? Those go bad too.
Yes. Have replaced the one to the heater. Fusible links kill power not turn on warning lights
__________________
Good judgement comes from experience,experience comes from bad judgement.

Dividing Creek Imports
Worldwide Vehicle Shipment and Importation Service
Restoration & Modification work


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

410.693.1391


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Reply With Quote
  #9  
Old December 29th, 2015, 08:46 PM
rdavisinva's Avatar
rdavisinva
Status: Online
Robert Davis
N/A
Member
 
Join Date: Oct 2004
Location: USA
Posts: 6,777
Here's how you verify.
Disconnect the battery ground and hook a light bulb between the ground terminal and the (-) battery terminal.
If the light glows (usually every so slightly) you have a diode or charge circuit short.
To verify disconnect the alternator and if the glow is gone you have a bad diode for sure.

The bad news is that if you have installed a 3rd alternator and the same issue persists, then you have a grounding issue or short that is accelerating diode failure, muthalikka.
__________________
RDavisinVA

Uncle "Richard" Douglas has a Land Rover with big wheels that never gets stuck... until he breaks something so it won't go. Uncle Douglas always breaks something. - Anna Crowther at the Conclave 2012 (AKA Carburetor Neck)

"What's with this death wobble, Uncle Douglas, I can't keep it in 1 lane?"
UD: "Just Power through it man!"
Reply With Quote
  #10  
Old December 29th, 2015, 09:05 PM
Uncle Douglas's Avatar
Uncle Douglas
Status: Offline
Doug Crowther
A defender in every driveway-motto
D-90 Source Vendor
 
Join Date: Dec 2007
Location: Gods Country- Central Virginia
Posts: 11,831
Registry
who ?
__________________
Good judgement comes from experience,experience comes from bad judgement.

Dividing Creek Imports
Worldwide Vehicle Shipment and Importation Service
Restoration & Modification work


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

410.693.1391


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Reply With Quote
  #11  
Old December 29th, 2015, 09:49 PM
rdavisinva's Avatar
rdavisinva
Status: Online
Robert Davis
N/A
Member
 
Join Date: Oct 2004
Location: USA
Posts: 6,777
You had to ask!
Guess who?

__________________
RDavisinVA

Uncle "Richard" Douglas has a Land Rover with big wheels that never gets stuck... until he breaks something so it won't go. Uncle Douglas always breaks something. - Anna Crowther at the Conclave 2012 (AKA Carburetor Neck)

"What's with this death wobble, Uncle Douglas, I can't keep it in 1 lane?"
UD: "Just Power through it man!"
Reply With Quote
Reply

Lower Navigation
Go Back   Defender Source > Defender & Series Technical Discussions > Defender Technical Discussions

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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
2.8 charging issue Overlander Defender Technical Discussions 4 July 20th, 2014 05:35 PM
Charging AC in a 97 artm Defender Technical Discussions 2 August 18th, 2009 11:33 PM
UPS charging customs duties and brokerage charges cgalpin Misc. Chit-Chat 7 November 26th, 2008 09:09 AM
Dual Battery Charging RBees Defender Technical Discussions 5 January 4th, 2007 08:51 AM
Battery Charging chris snell Defender Technical Discussions 3 November 29th, 2006 12:20 PM


All times are GMT -5. The time now is 09:25 PM.


Copyright