67 F100 Altenator Problem
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Senior User
Joined: Sep 2002
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From: United States
67 F100 Altenator Problem
Hi!
Got a wire burning/hot problem.
Today as I was test driving my 67 the engine just died. From under the hood came that oh too familiar smoke and electrical smell. The wires from the alt to the regulator and up to the selenoid had totally fried.
I rebuilt the harness with new wires according to the wiring diagram and compared it to my 70 F100. The wiring is correct.
Part of the original problem was possibly the connection to the regulator. It was pulled partially off when I removed the burned wires.
Now the new wires still get very hot. The alternator gets VERY hot. I think if I let it go, they would burn again. I removed the three wires from the alternator and they no longer get hot. But of course it's not charging either.
So.... any ideas what's going on here? Bad alt? Bad reg?
Thanks!
Larry
www.larryscars.com
Got a wire burning/hot problem.
Today as I was test driving my 67 the engine just died. From under the hood came that oh too familiar smoke and electrical smell. The wires from the alt to the regulator and up to the selenoid had totally fried.
I rebuilt the harness with new wires according to the wiring diagram and compared it to my 70 F100. The wiring is correct.
Part of the original problem was possibly the connection to the regulator. It was pulled partially off when I removed the burned wires.
Now the new wires still get very hot. The alternator gets VERY hot. I think if I let it go, they would burn again. I removed the three wires from the alternator and they no longer get hot. But of course it's not charging either.
So.... any ideas what's going on here? Bad alt? Bad reg?
Thanks!
Larry
www.larryscars.com
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Joined: Jan 2008
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67 F100 Altenator Problem
I just fixed a problem with a friend's Taurus that was close to the same (No Fire though) problem.
It ened up that the power connection and the push on connection(field-stator) where Loose, this was causing power spikes *Lots of sparks* while engine was running.
With all the connections very secure, this system should not over-heat.
It ened up that the power connection and the push on connection(field-stator) where Loose, this was causing power spikes *Lots of sparks* while engine was running.
With all the connections very secure, this system should not over-heat.
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Joined: Jan 2001
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From: Virginia
67 F100 Altenator Problem
Also check your battery. Make sure it has 12 volts under no load. Does it crank the truck over ok?
Also, if you are running a factory amp guage (no alt dash light) it should be wired this way. A factory idiot light wiring is different.
Also, if you are running a factory amp guage (no alt dash light) it should be wired this way. A factory idiot light wiring is different.
Last edited by Franklin2; Aug 12, 2003 at 10:10 PM.
Thread Starter
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Senior User
Joined: Sep 2002
Posts: 306
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From: United States
67 F100 Altenator Problem
Thanks guys!
I think I have it fixed for the most part. I rechecked the wiring and it's the same as the diagram posted. So I put a new alt and reg in and that seems to have solved the over heat situation. Only problem now is my amp gauge is pegged to the right side. Think I fried it?
Larry
I think I have it fixed for the most part. I rechecked the wiring and it's the same as the diagram posted. So I put a new alt and reg in and that seems to have solved the over heat situation. Only problem now is my amp gauge is pegged to the right side. Think I fried it?
Larry
