Rising Sun Member Forums  

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

Reply
 
Thread Tools
  #1  
Old 05-13-2008, 08:57 AM
CardinalFJ60's Avatar
CardinalFJ60 CardinalFJ60 is offline
Rising Sun Member
 
Join Date: Aug 2005
Location: Lafayette
Posts: 1,593
Default Low voltage when raining/wet

I have a voltage drop (at the guage) when it's raining out. normally, the voltmeter stays at the correct place on the guage. When it's raining like this morning, I get a drop and it sits just above the 12, at idle, it's at about 10.

I had the headlights on, the radio on, and the wipers on low, that's it. To compare, at night if I have all that stuff on (and it's not wet) I get the normal slight drop, but not down to 12. and maybe at idle with that on, it'll go just above 12 (maybe 12.5)

Any thoughts on what to start chasing? It'll also do this after I wash it.
Reply With Quote
  #2  
Old 05-13-2008, 09:21 AM
RockRunner's Avatar
RockRunner RockRunner is offline
Hard Core 4+
 
Join Date: Nov 2006
Location: Roxborough
Posts: 4,400
Default

I am not an electrical guru so take this for what it is worth, 1/2 penny

I would look for a wire that is exposed and is, I think, being grounded by the water that is creating contact. I had a similar situation where part of a bear wire was being "grounded" when I drove fast. The wire would be pushed into the body at speed but standing still it was fine. Only took me three days to figure that one out

Good luck, I am sure one of the electrical wizards will give you the correct advice in a few
__________________
Thanks T aka Tom KR0MPS

Quote:
Originally Posted by RockRunner;
keys = Man that is a whole story


TLCA #6136
Going under the knife again !

85 4runner Marlin Ultimate 5" lift 40" MTR's Soft top and doors Towed to Moab by the Big Blue Whale, 07.5 Dodge Mega Cab Laramie 4" lift covered and chiped No more slow lane for me
Reply With Quote
  #3  
Old 05-13-2008, 09:23 AM
Red_Chili's Avatar
Red_Chili Red_Chili is offline
Hard Core 4+
 
Join Date: Aug 2005
Location: Littleton CO
Posts: 8,409
Default

For not being an electrical guru, Tom nailed it IMHO. Partial ground fault ('leak' to ground). Or, the exciter wire has an ohmic connection. Perhaps at the alternator.
__________________
-Bill Morgan
Heb Dduw, heb ddim; Duw a digon
Abnormally aspirated
KDěRCH
Bio Page
I'm that gun-totin', farm-raised, evangelical, pro-environment, OHV ridin'/drivin', Southern civil rights pro-labor Liberal yo' momma told you couldn't possibly exist.
Reply With Quote
  #4  
Old 05-14-2008, 08:47 AM
CardinalFJ60's Avatar
CardinalFJ60 CardinalFJ60 is offline
Rising Sun Member
 
Join Date: Aug 2005
Location: Lafayette
Posts: 1,593
Default Thanks!

Looks like I'll be getting up close andd personal with all the nooks and crannies of the 60.

Thnks for the guidance.
Reply With Quote
  #5  
Old 05-14-2008, 10:55 AM
RockRunner's Avatar
RockRunner RockRunner is offline
Hard Core 4+
 
Join Date: Nov 2006
Location: Roxborough
Posts: 4,400
Default

Quote:
Originally Posted by Red_Chili View Post
For not being an electrical guru, Tom nailed it IMHO. Partial ground fault ('leak' to ground). Or, the exciter wire has an ohmic connection. Perhaps at the alternator.
I am learning slowly but surely from the RS Guru's

Once I moved my CB ground wire I had no more feedback through the stereo, of course I broke my second CB antenna leaving Prichett Canyon
__________________
Thanks T aka Tom KR0MPS

Quote:
Originally Posted by RockRunner;
keys = Man that is a whole story


TLCA #6136
Going under the knife again !

85 4runner Marlin Ultimate 5" lift 40" MTR's Soft top and doors Towed to Moab by the Big Blue Whale, 07.5 Dodge Mega Cab Laramie 4" lift covered and chiped No more slow lane for me
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 05:25 PM.


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