Question about Isuzu Cars & Trucks

Open Question

Alternator overcharging battery

Alternator is overcharging the battery (reading greater than 16v)- need temp fix to stop battery from being fried.

Posted by Anonymous on

Ad

6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of.(from cars to computers, handyman, and even drones)
click here to download the app (for users in the US for now) and get all the help you need.
Goodluck!

Posted on Jan 02, 2017

Ad
  • 12 Answers

SOURCE: 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

Posted on Jan 24, 2009

Ad
emissionwiz
  • 76848 Answers

SOURCE: blown lights and overcharging alternator (2 alternator)

this can be caused by a shorted cell in the battery, has the battery tested? and clean the battery cable's, corrosion can also cause this condition.

Posted on Mar 27, 2009

Monster80
  • 460 Answers

SOURCE: Isuzu trooper overcharging (1996)

Make sure the ground wire going out of the voltage regulator is grounded and the alternator ground is good.Check all ground wires to there are the ones that stop the over charging.Theres also is a small little capacitor that should bolt right next to the regulator that holds alot of the over charging..

Posted on Mar 30, 2009

  • 135 Answers

SOURCE: 1991 jeep wrangler: alternator overcharging

It sounds as the voltage regulator which is built into the back of the alternator has stuck. Occaisionally this even happens on new ones. Would suggest taking the alternator back as it shoud be under warranty.

Posted on Jul 06, 2009

  • 179 Answers

SOURCE: charging

Most likely it is the voltage regulator that's going bad which allows overcharging. this is inside the alternator, so it most likely needs replacement. you could pull it out and take it in to most auto parts stores and they would check it to make sure.

Posted on Jul 06, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Overcharging. New alternator and battery. Charging 17 to 18 volts and frying battery. 2000 Camry 2.2l


Have alternator checked for output in case its a fluke alternator problem.

Sep 12, 2015 | 2000 Toyota Camry

1 Answer

1996 toyota corolla, battery & alternator


If the battery has been overcharged then the cells will be damaged . Have a load test done on the battery to confirm failure and if so then get a new battery.. have the alternator checked at the same time because there is a possibility that the regulator in the alternator has been also damaged allowing over charging of the battery. By having incorrectly connected the jumper leads then you may have also damaged the cpu unit of the engine management box. Best have an autro electrician look at it .

Jun 26, 2013 | Cars & Trucks

1 Answer

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

Alternator is overcharging but only a little. 15.3 volts. What causes this?


You're correct normal voltage range while you're vehicle is running will be around 14.1-14.7v the overcharging slightly has to do with the components inside your alternator. An irregular stator or magnetic brushes for instance. This shouldn't pose as a problem for you. Fyi racing applications most often run a 16v starting/charging setup and the electronic components in those are not affected by the higher voltage levels in anyway.

Dec 23, 2010 | 1997 Ford Expedition

3 Answers

Car battery keeps draining.is the altenator overcharging it.


Have the battery tested and replace as necessary. Once you are sure the battery is good, have the charging system tested. The voltage for this is between 13.5 volts and 14.7 v. Anything greater than that is just too much and can cause the battery to overheat and have to be replaced prematurely. Let me know if you need anything else.

Jun 11, 2010 | 2004 Kia Sorento

1 Answer

2001 mazda protege battery overheating - bad smell....., not catalytic converter . 1.6l.


You need to get the alternator output checked. If you can smell something like rotten eggs then what you are smelling is hydrogen gas which is explosive !! Batteries get hot and smell because the alternator is charging at too high a level. Check the output with a multimeter across the battery with the engine running. If it reads higher then 14.4 volts, its the alternator and you need to fix it as overcharging of your battery will cause total failure (if it has not already screwed your battery)..

Dec 19, 2009 | 2001 Mazda Protege

1 Answer

BATTERY OVERCHARGED AND ALTERNATOR IS FINE


If you have a fully charged battery when you installed then 14 volts is way to much charge for the battery which would mean that the alternator probably has a faulty regulator and the alternator needs to be changed otherwise you will continue to install new batteries. If the battery was in an uncharged state then it is possible for the alternator to charge at full capacity to charge up the battery.

Dec 17, 2009 | 2002 Nissan Altima

3 Answers

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

Isuzu trooper overcharging (1996)


Make sure the ground wire going out of the voltage regulator is grounded and the alternator ground is good.Check all ground wires to there are the ones that stop the over charging.Theres also is a small little capacitor that should bolt right next to the regulator that holds alot of the over charging..

Mar 30, 2009 | 1996 Isuzu Trooper

Not finding what you are looking for?
Cars & Trucks Logo

Related Topics:

25 people viewed this question

Ask a Question

Usually answered in minutes!

Top Isuzu Experts

yadayada
yadayada

Level 3 Expert

76848 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22246 Answers

Thomas Perkins
Thomas Perkins

Level 3 Expert

14384 Answers

Are you an Isuzu Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...