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Old Jan 9, 2006 | 07:06 PM
  #1  
Deac1970's Avatar
Deac1970
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From: New England, North of Bos
Battery Drain

1986 XLT 5.0L EFI 132000 miles

I Recently had some starting trouble that pointed to a dead battery. After replacing the battery and starter, I noticed a ton of corrosion around the battery cables, and solonoid. So, change 'um I did, and after changing out I got some wierd reading with my meter. Thinking it may be an alternater issue I first disconnected the alternator harnesses.

The battery disconnected is reading approx. 12V.

With the battery connected both Pos and Neg, it read approx 6.5V and was
dropping.

One by one I eliminated the fusible links on the solonoid and found that the one causing the drain was the black/orange link that feeds down to the alternator. I was getting a drain even with the Alt. harness disconnected!!

Any ideas?????
-Deac1970
 
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Old Jan 10, 2006 | 06:15 PM
  #2  
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Deac1970
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From: New England, North of Bos
Exclamation New Findings but Still stumped

after changing out a couple of fusible links and a broken alternator wire, the battery was still being drained so I started pulling fuses. When I pulled the courtesy light fuse, the battery drain stopped.
Does anyone have any ideas??
-deac1970
 
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Old Jan 10, 2006 | 06:34 PM
  #3  
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BroncoRoadKill
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From: San Antonio, Texas
Well if you have it contained to that fuse start pulling bulbs untill the drain is gone, or it could be a bad socket or wiring.
 
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Old Jan 10, 2006 | 06:49 PM
  #4  
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Black Ford XLT
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From: Swansea SC
Also consider this, what else is on that fuse, I own a 185 f-150 and had the same problem. It turned out to be the electric choke. The relay under the dash went south ( contacts closed) Draining my battery .I dont know whatelse is on your courtesty circuit, but also gives direction for another possiblilty. Good luck TR
 
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Old Jan 11, 2006 | 07:45 AM
  #5  
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Deac1970
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Thanks for the insight guys, I just got the schematic and will now break out the meter, and open up a brand new bag of patience.
 
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