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dead batteries

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Old Jul 20, 2012 | 07:45 AM
  #1  
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mjoshea
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dead batteries

89 350 7.3 diesel, the batteries will not stay charged. Once stated the alternator does charge. But let it sat for a time and the batteries will drain down
 
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Old Jul 20, 2012 | 07:51 PM
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From: Deepwater Mo.
Test the Alternator to see if it's charging.

Make sure you have a good connection, sometimes those old cables break down over time.

Check your batteries. Pop the tops of the batteries to see if there is acid in them.
 
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Old Jul 21, 2012 | 03:50 AM
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Sound more like a parasitic draw on the system. Watch this:
How To Perform a Parasitic Draw Test - YouTube
 
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