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2004 Tahoe is overcharging, replaced battery and alternator

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 20 Answers

SOURCE: alternator overcharging

ok, there is an earth wire between the engine and the body (usually bolted to the exhaust manifold), you need to undo it from the body, and with a piece of sandpaper or a file, you need to clear away the paint from under where the wire connects to the body, (might be a bad earth giving a faulty sensor reading, because on the production line the body is painted before anything else is fitted), clean the end of the earth wire contact and re-connect.

if you still have the same problem, you need to see an auto electrician or your nearest dealer.

Posted on Dec 03, 2008

emissionwiz
  • 75051 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

  • 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

  • 6982 Answers

SOURCE: Battery overcharges and light is on

Never saw a charging system problem cause anyone to fail inspection. But, overcharging will cook the water out of your battery and can damage the computer system if not taken care of. Overcharge can be caused by either a grounded alternator field wire or a bad regulator. Since the condition appeared after replacing the alternator it too is suspect as an internal grounding can also cause that.

Posted on Jul 20, 2009

outdoorsman5
  • 631 Answers

SOURCE: 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.

Posted on Dec 18, 2009

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2 Answers

My car is overcharging what could it be to caves it to overcharged,i am a disable veteran,need help?


Sounds like a faulty regulator rectifier on the alternator borrow a compatible alternator to test the charging system
It usually is cheaper to replace the whole alternator than have them repaired

Mar 24, 2016 | 2002 Cadillac Deville

1 Answer

07 Milan overcharging battery. Replaced alternator. Still overcharging battery. Original alternator bench tested good. What would cause this.


i would say pcm.these. are notorious for getting spiked from ignition sys.have ya had any perfomance problems in the past?

Oct 21, 2014 | 2007 Mercury Milan V6 AWD Sedan

2 Answers

Charging/electrical problem


charging voltage should be 14.5-16..not 12.5.. thats too low.. get the alternator replaced and your charging issues should disapear..

Feb 08, 2014 | 2004 Pontiac Grand Prix

1 Answer

2004 envoy alternator gauge pegging


alternator could be overcharging, cause of this is a bad voltage regulator, it should be internally in the alternator, (a way to tell this is to check your battery to see if it looks like its swelled, or pull alternator off and have it tested). if voltage regulator is bad it's more cost effective to just replace the alternator. but if not then good possibility your gauge has gone out.

Sep 13, 2012 | 2004 GMC Envoy

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

My 2004 Kia Sedona is going through headlights like water. I am replacing them at least three times a year. What is the problem?


It may be that the alternator is overcharging, by delivering too high a voltage. If this is the case, it would also damage your battery. The charging voltage is not adjustable, and you would have to replace the voltage regulater, which is located inside the alternator. Before doing that, use a digital voltmeter, to measure the voltage at the battery terminals with the engine running at 1500 -2000rpm. The voltage should measure 14.2 Volts. If significantly higher, the regulater requires to be replaced.

Steve

Sep 22, 2010 | 2004 Kia Sedona

1 Answer

Battery fuse melted, alternator showing good at fuse ,but when reconnected gets hot and starts to melt


common problem on VAG fusebox above the battery - replace the cable from the alternator and the fuse box itself, should solve the problem. to check, put an voltmeter across the battery when engine running. should be approx 14.volts. then try across the alternator. if more than 1 volt difference, then you have a bad connection and that causes the cable to overheat. alternative scenario that alternator is overcharging, but than a voltmeter will also show that

Jun 18, 2010 | 2004 Volkswagen Jetta

1 Answer

Battery overcharges and light is on


Never saw a charging system problem cause anyone to fail inspection. But, overcharging will cook the water out of your battery and can damage the computer system if not taken care of. Overcharge can be caused by either a grounded alternator field wire or a bad regulator. Since the condition appeared after replacing the alternator it too is suspect as an internal grounding can also cause that.

Jul 20, 2009 | 2003 Ford Focus

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