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Battery warning light

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  #21  
Old 06-16-2014 | 05:58 PM
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Originally Posted by HammerFit
Checked it again a few hours later and it is now 12.2 so something is draining the battery while it is at rest
2 hrs later down in the 11's so it must be something is draining it down
 
  #22  
Old 06-16-2014 | 06:01 PM
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Start pulling fuses till the draw stops.
 
  #23  
Old 06-17-2014 | 12:13 PM
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100 amp fuse under hood drawing 3.8v all small fuses = 0
So this runs the alternator according to RAVE, going to try changing this fuse first
 

Last edited by HammerFit; 06-17-2014 at 12:25 PM.
  #24  
Old 06-17-2014 | 12:54 PM
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Originally Posted by HammerFit
100 amp fuse under hood drawing 3.8v all small fuses = 0
So this runs the alternator according to RAVE, going to try changing this fuse first
Try disconnecting the Alternator instead and see if the draw stops.
 
  #25  
Old 06-17-2014 | 04:46 PM
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Originally Posted by fishEH
Try disconnecting the Alternator instead and see if the draw stops.
Ok, some new numbers. First I disconnected the alternator (the top large cable)
Previously I was reading 3.8 at the 100A fuse. With alternator disconnected that reading is now 1.87. So does that tell me the alternator is not totally bad or can there be a connection issue? Or is this telling me my 3 phase generator is only using 2 phases?

Here's why I'm thinking connection. When I installed this alternator the small wire that has a connector that has a hole in the terminal end broke off the wire when I was re connecting. I replaced with exact same type connector and crimped down and electrical tapped. Could this possibly be the problem? How can I check that w meter? Unplug that connector and test at fuse?

I also re ran my battery numbers again since I know that the battery is fully charged.
Engine off: 12.95
Engine off lights on: 12.70 good=11+
Engine on no accesories: 13.87 good=13.8-14.4
Engine on all accessories running: 13.5 min.=13.2
 
  #26  
Old 06-17-2014 | 05:54 PM
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Your last test tells me alternator is putting out enough amps. So diodes and windings are OK.


What color is this small wire you had to put a terminal on?
 
  #27  
Old 06-17-2014 | 07:23 PM
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Originally Posted by Savannah Buzz
Your last test tells me alternator is putting out enough amps. So diodes and windings are OK.


What color is this small wire you had to put a terminal on?
the color is dirty haha see the circled one in the pic
 
Attached Thumbnails Battery warning light-alternator.jpg  
  #28  
Old 06-19-2014 | 07:58 AM
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Originally Posted by HammerFit
the color is dirty haha see the circled one in the pic
Does anyone know where this wire leads to? (see pic above) I checked RAVE can't seem to locate it. I would like to replace the entire wire, I think this is what is shorting out. Since the voltage drop decrease by 50% when I take off the top cable, I'm assuming it's the connection I changed out on the 2nd cable down.
 
  #29  
Old 06-19-2014 | 08:27 AM
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Why not keep pulling wires until the draw is completely eliminated???
 
  #30  
Old 06-19-2014 | 12:35 PM
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Originally Posted by fishEH
Why not keep pulling wires until the draw is completely eliminated???
OK, I did, top cable drops it by half. Second cable nothing, reading stayed same,
bottom plug in cable nothing reading stayed same.

I decided to change the connector on the cable in the middle, the one that I had changed previously just to make sure it was a good connection. Connection I now I am very good with. Tightened the nut back down and pop goes the stud that the bolt was on! So, now I guess I'm going to have to take the alternator back off and get that damn stud back out!
 


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