Question about 1984 Dodge Pickup 4WD

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Battery overcharges in my '84 pickup.Have changed alternator and voltage regulator but it still boils over. Amp gauge quit working also. Believe there is either a short or wire break but do not know where to look for it.

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Put a new regulator on and dont use secondhand bits from scrapyard

Posted on Jul 16, 2009

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2 Answers

Why is 1987 toyota pickup overcharging


posible bad voltage regulator inside the altenator

Sep 04, 2014 | 1987 Toyota Pickup

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Why is my battery boiling over 94 Telstar tx5 ghia


Your alternator is overcharging the battery VERY VERY BADLY. DO NOT drive that car until the voltage regulator is fixed!

Aug 11, 2014 | Cars & Trucks

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My battery is putting out to many volts


typical problem of an shut alternator. the voltage regulator bridge of the alternator is not working properly. only solution is to change it. if youu smell rotten egges when car is running thats it!

Dec 19, 2012 | 1995 Mitsubishi Eclipse

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Put a new alernater an still over charging


Over charging could be the result of several things including:
    Faulty Voltage Regulator
  1. A car's battery will overcharge if the voltage regulator isn't working correctly. A voltage regulator is usually part of the alternator, and is used to keep a steady flow of voltage to the battery. If the voltage regulator is defective, it will send either too little or too much charge to the battery. If it sends too much, the car battery will overcharge. The voltage regulator is easily replaceable at an easily affordable price, sometimes for as little as twenty dollars, as of 2009.
  2. Faulty Alternator
  3. Sometimes the alternator itself can be at fault. The alternator is the device that converts the mechanical power of the engine into electrical power to charge the battery. When an alternator breaks, it usually stops creating electricity for the battery, which will then eventually die. However, if the wrong alternator is placed in the car, or if the alternator is running at the wrong pace, it will create too much energy for the car battery, causing it to overcharge. The alternator is another easily replaced part.
  4. Incorrect Charger Use
  5. If a battery charger is used to charge your battery outside of your car, improper use of the charger can result in overcharging. If a battery is placed on the charger too long, it can result in overcharging, and a significant decrease in your battery's lifespan and efficiency. This is why it is important to read about your specific battery and understand how long it needs to charge to be effective. Too much charge will lead to problems.
  6. Faulty Battery Chargers
  7. Sometimes chargers can be faulty. Their settings may be wired incorrectly, or the charges labeled incorrectly. As a result, your battery may be getting overcharged, even if you are carefully monitoring your charging. This is a problem that is hard to avoid, as manufacturing mistakes can happen anywhere, anytime without warning. It is a good idea to test your charger regularly to see if it is running correctly.
  8. Heat
  9. Extreme heat in the summer can also have an adverse effect on the car battery. If the battery has been previously overcharged, extreme heat can increase the problems caused by overcharging, and exacerbate any other problems with the battery. This problem can be hard to avoid if you live in a warm climate. The only real way to ensure safety against this problem is to avoid overcharge in the first place.

Feb 27, 2011 | Ford Expedition Cars & Trucks

1 Answer

Charge light was on and alternator was overcharging. had alt. rebuilt and new voltage reguator, not charging now. only getting 2 to 3 volts are the charge fuse beside battery. new voltage reg is electronic...


There is a fuse under the dash that is the same one that operates the fuel gauge, if it blows the alternator wont charge. If the fuses are good I would take the alternator off and get it tested. Hopefully the rebuilder will warranty it. I would also make sure the new regulator is compatible with the old type regulator system. Most large auto parts stores can test alternators, and they normally do it free.

Dec 18, 2010 | 1984 Toyota Pickup Deluxe

2 Answers

My 1987 dodge dakota is not holding a charge, altonator tested and good battery only a year old but have to push start it to get it to run and my lights are really dim


You need to bypass voltage regulator to be certain alternator is charging properly. When you full field alternator it eliminates voltage regulator. If it indeed is good it will overcharge. If it overcharges as it should when you bypass/full field alternator then the regulator, or its connection or the place it attaches to is rusty & wont conduct a ground.

Aug 10, 2010 | 1987 Dodge W150

1 Answer

Battery overcharging


Replace the voltage regulator.

Jun 07, 2010 | 1991 Dodge Ram 150

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My battery is boiling and smelling. Is it a faulty battery, or is my alternator causing it to over-charge the battery?


You need to replace the battery to start with. you cannot test the charging system with the battery the way it is or you will get a false reading. Once you replace the battery, you can then test your charging system to see if the alternator is causing the problem. If its charging more than 14.8 -15 volts, its too much and you will need to replace the alternator.

Apr 13, 2009 | 1998 Honda Civic

2 Answers

Alternator may be overcharging?


Yes It sounds like the voltage regulator inside the alternator has gone wide open .It can also ruin your battery and explode the battery.I would have it hooked up to a alternator tester and just to make sure it's not just your gauge.hope this helps

Jan 24, 2009 | 1999 Chevrolet Silverado 1500

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