Hot lead on Alternator - Diesel Forum -
6.0L Power Stroke Engine and Drivetrain Discussion of the 6.0L Power Stroke diesel engine and drivetrain in the 2003-Up Super Duties and Excursions. No gas engine discussion allowed except on transmissions and drivetrain that pertain to all models. Please confine discussion of topics in this forum to those items that are specific to the 6.0L Power Stroke engine.

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post #1 of 3 (permalink) Old 07-09-2011, 05:11 PM Thread Starter
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Hot lead on Alternator

So Im under the hood this afternoon chasin whistles and a valve cover leak and noticed my Hot wire to the alt has melted beyond recognition. It melted about 3 inches of wire and the plastic all around where it bolts to. I removed the plastic cover on back of alt and removed burnt area and everything else looks fine. What would cause somthing like this? I drove it about 250km or 150 miles yesterday.

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post #2 of 3 (permalink) Old 07-09-2011, 05:45 PM
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If the connection came loose then you would have a higher amp draw thus creating heat.
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post #3 of 3 (permalink) Old 07-09-2011, 10:54 PM
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Could be a few things.

1) Loose connections. Check the alternator and battery connections. Need to be tight and clean
2) Ground problems. Check the battery to frame and engine to frame grounds.
3) Could be a short somewhere
4) Too small wire size. If you have additional load you could be overheating the wire.
5) Bad alternator


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  Diesel Forum - > 1999-2007 Ford Super Duties > 6.0L Power Stroke Engine and Drivetrain

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