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03-11-2008, 05:54 PM
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Senior Club Cobra Member
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Join Date: Jun 2005
Location: Scottsdale,
az
Cobra Make, Engine: Bought an Exact carbon car in TX. Bought a 427 sideoiler with 630 HP
Posts: 1,714
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Not Ranked
Alternator problem?
The alternator wasn't charging the battery so I took a close look at the alternator and discovered that the white power wire was melted at the solder joint to the connector. What do I need to look for as to a possible cause? I'm taking the alternator to NAPA to have it checked in the AM and will buy a heavier duty connector (maybe it had cracked and caused a short). I'll also follow the wire to the extent possible to see if it has shorted somewhere. Any other thoughts? I'm also concerned that the Autolite voltage regulator could have been damaged. Any help is appreciated.
Thanks, John 
__________________
double ugly
The average fighter pilot, despite the sometimes swaggering exterior, is very much capable of such feelings as love, affection, intimacy and caring. These feelings just don't involve anybody else.
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03-11-2008, 06:01 PM
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Senior Club Cobra Member
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Join Date: Feb 2004
Cobra Make, Engine:
Posts: 1,226
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Not Ranked
What type of alternator? I believe that the Ford 2G has a long history of this. I went with a Delco so I wouldn't have any problems.
Jim
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03-11-2008, 08:36 PM
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CC Member
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Join Date: Feb 1999
Location: Lexington,KY,
Posts: 513
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Not Ranked
Hi Double,
I never did get my externally regulated alt. to work on my E.M.
Last year I put a a single wire unit and have not had a single problem since.
Simple is better for electrical idiots like me.
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Roger
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03-11-2008, 08:47 PM
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Senior Club Cobra Member
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Join Date: Jun 2003
Location: Lockeford,
CA
Cobra Make, Engine: Midstates, Genesis 427 S/O
Posts: 300
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Not Ranked
Electrical failures occur at their weakest points, especially in DC circuits. I have a single wire alternator as well, never had a problem.
__________________
"God saved you by His grace when you believed. And you can't take credit for this; it is a gift from God".
Ephesians 2:8
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03-11-2008, 11:00 PM
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CC Member
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Join Date: Mar 2008
Location: Edgewood,
WA
Cobra Make, Engine: SPF 2773 Ford Racing 427W
Posts: 132
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Not Ranked
Well, what works best for me is to take both alt. and reg. to a auto electric rebuild shop. They will check it and repair it for less, and it will be the best product .
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03-12-2008, 03:58 AM
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CC Member
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Join Date: Jul 2005
Location: Virginia Beach, Va & Port Charlotte, Fl.,
Posts: 2,283
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Not Ranked
single wire here too. No problems at all.
__________________
Too many toys?? never!
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03-12-2008, 11:09 PM
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Senior Club Cobra Member
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Join Date: Jun 2005
Location: Scottsdale,
az
Cobra Make, Engine: Bought an Exact carbon car in TX. Bought a 427 sideoiler with 630 HP
Posts: 1,714
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Not Ranked
It turned out that a coil blew in the regulator. Everything is good now.
John
__________________
double ugly
The average fighter pilot, despite the sometimes swaggering exterior, is very much capable of such feelings as love, affection, intimacy and caring. These feelings just don't involve anybody else.
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03-13-2008, 12:00 AM
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CC Member
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Join Date: Dec 2001
Location: San Diego,
CA
Cobra Make, Engine:
Posts: 2,979
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Not Ranked
But the question is why did regulator coil fail?? Did you get the alternator tested?
__________________
Remember, It's never too early to start beefing up your obituary.
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03-13-2008, 03:43 AM
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Senior Club Cobra Member
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Join Date: Jun 2005
Location: Scottsdale,
az
Cobra Make, Engine: Bought an Exact carbon car in TX. Bought a 427 sideoiler with 630 HP
Posts: 1,714
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Not Ranked
I took the alternator to NAPA and it tested "Good". That left the regulator since the batteries still weren't recieving a charge. Replaced it and all's well. The regulator was an Autocraft as per the original and simply shorted out the best we can tell.
John
__________________
double ugly
The average fighter pilot, despite the sometimes swaggering exterior, is very much capable of such feelings as love, affection, intimacy and caring. These feelings just don't involve anybody else.
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03-13-2008, 04:49 AM
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CC Member
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Join Date: Aug 2007
Location: Lavon,
TX
Cobra Make, Engine:
Posts: 3,008
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Not Ranked
I was going to ask if you were sure the regulator was good, but you have it taken care of. The wire melted because of too much current going through it. In a situation like that, the wire will usually burn completely through before the alternator goes bad.
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03-13-2008, 08:04 AM
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Member of the north
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Join Date: May 2003
Cobra Make, Engine: A Cobra
Posts: 11,207
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Not Ranked
Double, they make a Solid state unit now. Looks the same, but is a bit more reliable.
I switched from the wire-wound unit to the SS unit a while ago...no problems.
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03-13-2008, 08:39 AM
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Senior Club Cobra Member
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Join Date: Jun 2005
Location: Scottsdale,
az
Cobra Make, Engine: Bought an Exact carbon car in TX. Bought a 427 sideoiler with 630 HP
Posts: 1,714
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Not Ranked
Where did you get the SS unit?
John
__________________
double ugly
The average fighter pilot, despite the sometimes swaggering exterior, is very much capable of such feelings as love, affection, intimacy and caring. These feelings just don't involve anybody else.
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