Mechanics

CHARGING SYSTEM PROBLEM

1984 Dodge Aries

Electrical problem
1984 Dodge Aries 4 cyl Front Wheel Drive Automatic 68000 miles

I have a 84 dodge aries with a 2.2 liter and can not get the alternator to charge. I replaced the alternator and voltage regulater after the alt went bad it worked a week and quit I replaced it with another alt but was given a bad one with a short that caused part of the harness by the battery to burn up. I repaired all the burnt wires and replaced the alt with a 3rd known good one now my problem is that I have checked for continnuity from the alt to regulater ground circuit checked alt output and field wires for power checked for shorts or battery drains and everything has checked out fine I get 12.6 v at alt output wire and 12.6 v at both field wires but when the car is running I watch the voltage steadily drop from 12.6 down to 11.5. The only time I see a charge is if I full field the alt by shorting one of the fields to ground and I get a 15+ volt charge as read at the battery terminals by a volt meter it appears to me that the regulator circuit is not functioning properly but I am getting power to both alt fields and both terminals at the regulator. Im stumped any suggestions would be appreciated as I havent seen a k car in about 10 years up until now the only things im leaning toward now are the starter solenoid or the computer but have no idea if those would help and I dont want to keep replacing parts as the car belongs to an elderly friend who doesnt have much money and has already paid a shop over $400 to look at it and they just cut a bunch of wires up and then shrugged their shoulders and told him they dont know.
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Ohiocowboy1277
December 8, 2009.




How did you full field it? If you tried to ground the field at the alternator you may have burned or shorted the regulator. It must be full fielded at the regulator without it being hooked up. Its ground is the mounting screws. I hope this helps. I've been running around today trying to see a K car but did not. I remember shorting out mine. If you need help, just ask, ok?

Tiny
Ch112063
Dec 9, 2009.
I did short it at the regulator plug with it disconnected also replaced the regulator twice im stumped on this one

Tiny
Ohiocowboy1277
Dec 9, 2009.
Thank-you. What can I do to help. Which of the wires are you grounding? And what are their colors? Blue and green? Red? I forget. Remember, this car is going to be fixed, if I have to send you exactly what you need. This is because your smart, nice, and a good man. We'll get it. Tell me about the tools available to you. Do you live near Jersey on east, or far away.
I loved these k-cars. So glad its still running. Great website.
This regulator your testing is now unplugged, and you have jumped a 12volt wire to ground, bring charging voltage up past 15. Alternator is slicing the magnetic field. Yet it doesn't charge when installed(tightly mounted). If the disconnected plug has 12volts on each Female terminal. There can be only one reason. The regulators circuit is open or incomplete. Jump the reg. Case to ground, while plugged in, jump it to the alternator black ground wire, let me know. OK?

Tiny
Ch112063
Dec 9, 2009.
The field wires are blue and green and has a black output wire and black ground wire at the alt. With the green wire shorted to ground at the regulator with the regulator unplugged I do see 15-16.5 volts at idle at the battery I was thinking about making a jumper wire from the regulator to the alt and trying that because I had to do do that on my duster and dodge van I have. I live in ohio but am currently in florida and florida is where the car is located it is my dads nieghbor so ive been trying to get this done before I go back to ohio on the 20th which is a challenge because the shop he took it to had left it a mess of burnt and cut wires that I finally sorted out so it atleast wont catch fire now and everything but the charging system is working properly . Strange way to spend a vacation but oh well keeps my mind occupied and I was up for a challenge lol

Tiny
Ohiocowboy1277
Dec 9, 2009.
Have you replaced the voltage regulator with a new one? They sell two kinds, one for 12 dollars and the other for around 45 or 50. I replaced around 25 cheap regulators. All had lasted only a week or so, clean up the ground for the voltage regulator. You aren't having much fun with this car. I'm sure its shorting intermittantly, I am getting 85 and 84 confused. You are grounding a green wire at regulator? And its full fielding, but when you plug it in, no charge? Charging voltage is 13.8-14.9 or so. Some are as low as 13.8(imports) some are high(15.2) yours should be higher, around 14.6 after the battery is ok. Is this a good battery? If you have 12 volts at the other(blue)wire, maybe you should try running your own wire, I worry your getting a short with the blue wire. That may balso have a short or open at times. Clean reg. Ground, run new green field wire, and replace the regulator if it will not charge.
You are thinking of doing what I had to do on my omni. I ran a new field circuit. Both wires, the blue can be battery voltage, but should be fused, and the other is ok to bypass. It worked fine.
Make sure you renew the wire and not splice it in, ok.

Tiny
Ch112063
Dec 9, 2009.
I really appreciate all your help im going to try this hopefully tomorrow if it quits raining its been raining all day here gotta love florida lol ill get back to you tomorrow and let you know how its coming

Tiny
Ohiocowboy1277
Dec 10, 2009.
Sure, I'm glad to help. I always take a look at all my posts everyday. I know you'll find a good regulator or repair it. Later. Joe
I wanted to remind you that the schematics and other related information like wire colors and splices are available on this website. They are completely accurate and easy to read. The ground circuits are great. Plus charging voltage for this car is also available. OK
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Tiny
Ch112063
Dec 10, 2009.

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