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Re: High Volts
[Re: moparphilll]
#2530383
08/02/18 10:03 AM
08/02/18 10:03 AM
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Joined: Sep 2007
Posts: 14,889
up yours
Supercuda
About to go away
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About to go away
Joined: Sep 2007
Posts: 14,889
up yours
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Yeah, there are two field wires to the alternator.
one of them, usually blue, goes tot eh feed side of the ballast and supplies a switched 12V to the alternator field.
The other, usually green, goes to the regulator and controls the return side of the field. This wire is shorted to ground, it should not be. Somewhere you pinched it in something, usually the valve cover.
They say there are no such thing as a stupid question.
They say there is always the exception that proves the rule.
Don't be the exception.
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Re: High Volts
[Re: moparphilll]
#2530409
08/02/18 11:22 AM
08/02/18 11:22 AM
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Joined: Aug 2007
Posts: 6,095
Valencia, España
NachoRT74
master
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master
Joined: Aug 2007
Posts: 6,095
Valencia, España
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Not really the "return side" but the negative field. We are talking about direct current.
ballast is normally hot when engine is running
but as mentioned is true the green field could be somehow being grounded to chassis somewhere, either the wire or the brush itself.
Unplug reg and check if green wire terminal is shorted to body/engine. If so, unplug also the green wire on back of alt. If still, the is the green wire, if not, is the alternator... brush, isolator, or some small internall short on alt producing a full field issue
With a Charger born in Chrysler assembly plant in Valencia, Venezuela
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Re: High Volts
[Re: moparphilll]
#2530429
08/02/18 12:10 PM
08/02/18 12:10 PM
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Joined: Jan 2003
Posts: 4,270
Morrow, OH
markz528
master
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master
Joined: Jan 2003
Posts: 4,270
Morrow, OH
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I would be checking for a good ground on the voltage regulator and make sure that the battery voltage feedback is getting to the regulator.
67 Coronet 500 9.610 @ 139.20 mph
67 Coronet 500 (street car) 14.82 @ 94 mph
69 GTX (clone) - build in progress......
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Re: High Volts
[Re: moparphilll]
#2530437
08/02/18 12:32 PM
08/02/18 12:32 PM
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Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
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got another used alt you can swap in? On the current alt ohm the (2) male field lugs on the alt & ohm each one to the nearby case. if an issue on either test you might pull the brush assys & see if anything is grounded that shouldn't be.
live every 24 hour block of time like it's your last day on earth
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Re: High Volts
[Re: markz528]
#2530577
08/02/18 05:54 PM
08/02/18 05:54 PM
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Joined: Jan 2003
Posts: 10,719
North Dakota
6PakBee
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 10,719
North Dakota
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I would be checking for a good ground on the voltage regulator and make sure that the battery voltage feedback is getting to the regulator. This is good advice. If you look at the wiring diagram you can see that the voltage regulator should be grounded and takes the reference voltage from the key side of the ballast resistor. http://www.mopar1.us/charge.html
"We live in a time when intelligent people are being silenced so that stupid people won't be offended".
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