alternator over charge
#1418303
04/11/13 05:08 PM
04/11/13 05:08 PM
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Joined: Jan 2003
Posts: 32,930 Grand Prairie,Texas
stumpy
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OP
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Joined: Jan 2003
Posts: 32,930
Grand Prairie,Texas
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This is driving me crazy. My charging system is running at 15+ volts. It's a two field alt and I have gone through 4 VRs and still no difference. I have a ground wire for the VR as well as a new plug. The green wire to the VR from the alt has continuity as well as power with the key on.I have battery voltage at the main alt post plus batt voltage to the other (red)field terminal. I am using a volt meter and it pulsates as do the lights. What am I doing wrong that makes the alt put out such a high voltage?
Last edited by stumpy; 04/11/13 05:24 PM.
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Re: alternator over charge 1983 D150
[Re: GrnMagic77]
#1418305
04/11/13 05:25 PM
04/11/13 05:25 PM
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Joined: Jan 2003
Posts: 32,930 Grand Prairie,Texas
stumpy
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OP
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Posts: 32,930
Grand Prairie,Texas
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Should I have power from the green wire with the key on and the engine not running?
Last edited by stumpy; 04/11/13 05:49 PM.
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Re: alternator over charge 1983 D150
[Re: stumpy]
#1418306
04/11/13 06:03 PM
04/11/13 06:03 PM
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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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yes... on mech reg, positive pole... on elect regs negative pole
With a Charger born in Chrysler assembly plant in Valencia, Venezuela
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Re: alternator over charge 1983 D150
[Re: RapidRobert]
#1418313
04/11/13 09:29 PM
04/11/13 09:29 PM
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Joined: Jan 2003
Posts: 32,930 Grand Prairie,Texas
stumpy
OP
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OP
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Joined: Jan 2003
Posts: 32,930
Grand Prairie,Texas
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Thetwo feld wires are green and red. The VR wires are red and green with green to the side and red at the top.I get no power to the top VR terminal. Looks like I am having some ignition switch issues but I will replace it tomorrow.
Last edited by stumpy; 04/11/13 09:37 PM.
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Re: alternator over charge 1983 D150
[Re: stumpy]
#1418315
04/11/13 09:56 PM
04/11/13 09:56 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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You might jump 12V to the "red" male alt terminal & 12V to the "top" male nub terminal on the reg & see if it straightens out
live every 24 hour block of time like it's your last day on earth
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Re: alternator over charge 1983 D150
[Re: stumpy]
#1418317
04/12/13 12:50 AM
04/12/13 12:50 AM
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Joined: Oct 2007
Posts: 3,884 Oregon
hooziewhatsit
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master
Joined: Oct 2007
Posts: 3,884
Oregon
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Another quick test ( ) Put your voltmeter leads on the battery+, and on the red wire* at the alternator. This voltage should be close to 0v. My bet is that it's ~.75v, or exactly the amount your voltage is above what it should be. (battery should be 14.4v. If you're seeing 15.2v, you would see 0.6v with this test. This is the culmination of all the voltage drops from the battery to the red wire at the alt) *For stock non-hacked systems, this is the blue wire.
If you ever find yourself in a fair fight, your tactics suck.
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Re: alternator over charge 1983 D150
[Re: hooziewhatsit]
#1418318
04/12/13 12:59 AM
04/12/13 12:59 AM
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Joined: Jan 2004
Posts: 27,347 Today? Who Knows?
1_WILD_RT
Management Trainee
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Management Trainee
Joined: Jan 2004
Posts: 27,347
Today? Who Knows?
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Stumpy, have you checked for full voltage to red wire at the regulator? That is what the regulator uses as a reference... If it is low the regulator will force the alternator to over charge.. As you know a marginal ground to the regulator will do the same thing... Good Luck..
"The Armies of our ancestors were lucky, in that they were not trailed by a second army of pencil pushers."
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Re: alternator over charge 1983 D150
[Re: hooziewhatsit]
#1418321
04/12/13 01:57 AM
04/12/13 01:57 AM
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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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I wanna do your test & just wanted to have it right
live every 24 hour block of time like it's your last day on earth
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