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In my 2993 alert battery light came on during the cold and when shot off batter is dead..is the batteries dead or the alternator

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  • Cars & Trucks Master
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If a battery light comes on it usually means the battery is not being charged. i would take the battery out and take it to a place that sells batteries and get it checked. Should be no money charge for that . If the battery is good then check the alternator and see if it is working. Could be both are bad.

Posted on Dec 17, 2016

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Posted on Jan 02, 2017

  • 51 Answers

SOURCE: Battery Charge

The best way is to get a voltmeter and check the voltage of the battery with the truck running and not running. When the truck is running, the voltage across the battery terminals should be aboput 14.9 volts (showing the alternator is charging the battery). With the truck off, the battery voltage should be about 12 volts (showing that the battery is holding the charge). From there, you should be able to tell which is bad.

Posted on Aug 14, 2008

  • 91 Answers

SOURCE: I have a 2001 PT Cruiser. The battery light came

Is it a remanufactured alternator. It sounds like you either got a faulty alternator or a wire is hooked up incorectly to it. I would test the voltage on the new one to make sure it wasnt a lemon If you are sure the wires are hooked up correctly.

Posted on Mar 15, 2009

  • 1 Answer

SOURCE: 2000 jetta has multiple alternator and battery failures

In my case, the instrument cluster was bad, causing the MFI display and radio to go haywire and putting a contstant drain on the battery. $760 to have the VW shop replace it. No problems related to the battery or alternator have occurred since.

Good luck.

kendaknapp@aol.com

Posted on Apr 23, 2009

  • 190 Answers

SOURCE: 1999 bmw 528i replaced battery and alternator

Replace your battery when its being tested there not testing it under a heavy enough load. A battery could have a dead cell in it and still show good on the charger. I've had that problem a few times.

Posted on Jul 07, 2009

  • 1162 Answers

SOURCE: Low voltage, the battery runs low when running the car

What is the voltage you are reading? Is it below 13.2 or so? Also have you checked the current with the engine off to see if something else is working that should not be on. I ran across this twice while working on a truck and car. A relay that was wore out keep trying to close and would drain the battery every couple of months. Sometimes you can hear them clicking or buzzing. Touching them sometimes they are warm or real hot. But that is not a sure sign it is bad. In my Trailblaze they get hot but are ok. Another thougth is the belt on your alt, correctly set to spin it at the right voltage. I have ran across this many times lately with serpatine belts.

Posted on Aug 04, 2009

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3 Answers

Replaced alternator but battery light stays on the dash


This light on dash is telling you, alternator is not charging or current is not reaching battery. With a voltmeter check your alternator output at battery. It should be at least 13.5 volts. If less than that check output at back of alternator, big red wire bolted to alternator. If voltage is within specs. then you may either have a blown fuse, open(broken) big red wire from alternator to baterry. Check big red wire circuit integrity by proving back of alternator where wire bolts to alternator. With the engine not running, there should be battery voltage at that bolt/wire. If no voltage repair open in circuit, either a fuse or broken wire( usually). If still no output(13.5 volts) or more, check power ground to alternator plug. If these power ground check out ok, then you more than likely have a defective alternator.

Feb 07, 2016 | Cars & Trucks

1 Answer

Battery on 06 silverado runs dead over a few days of not being used.


More than likely a parasitic drain.
Many times in courtesy system--Check after dark for any system lights burning, especially lighted mirrors if present.
If not found, drain test required.

Jan 08, 2014 | Chevrolet Chevy Cars & Trucks

2 Answers

Lights dim at stop and brighten on go


I think the battery is shot

Is it over 5 years old replace it
then test the alternator output

Doubt the alterntor is bad the battery
won't hold a charge that is why your
lights are so dim,too much resistance
in battery cells

Jan 22, 2013 | 2002 Toyota Sequoia

1 Answer

After charging my dead battery it will only run for a second or two then dies.


Perhaps the batter is "dead" dead and has met the end of it's functional life. You see, lead batteries like car batteries convert lead ions in solution into a solid as energy by chemical reaction. Charging the batter reverses the process, but the process becomes less and less reverseable as the age of the batter increases. When the process can no longer be efficiently reversed by "charging", the battery remains in it's dead, or semi-dead state, where it might run for only a few seconds.

Also, your alternator might be shot because technically, if you can start your engine, the alternator should provide the power to remain on; the battery serves only the purpose of starting the car and receiving the charge from the alternator to power the rest of the car's electronics.

Test both the battery and alternator, no more than $100-$150 to fix either problem.

Hope that helps!

Feb 02, 2011 | 1995 Jeep Grand Cherokee

2 Answers

Red battery light appeared on dashboard. Please advise the potential problem. Chrysler 300c


Either your battery is shot and no longer will take a charger and your PCM is noticing low voltage or your alternator is not longer charging well enough to provide adequate voltage to your PCM. THese are 2 signs of the battery light

Mar 22, 2010 | 2005 Chrysler 300

1 Answer

The check engine light is on. The battery can hold a charge but drains very quickly. Could this be the alternator?


Check battery voltage with a volt meter, should have no less then 12.0 volts, then start engine check voltage at battery again, should have no less then 13.5 volts and no more then 15.0 volts, if bad voltage there replace alternator, if all good, your batter has a dead cell, replace it.

Jan 08, 2010 | 2005 Dodge Grand Caravan

2 Answers

Battery light comes on, replaced battery 1 week ago because of supposed dead cell(had replaced it a year ago as well) had them test alternator at the time said it was holding charge last night van died no...


THE BATTERY LIGHT COMES ON TO ALERT YOU TO THE FACT THAT THE BATTERY IS NOT BEING CHARGED BY THE ALTERNATOR, IT DOESN'T MEAN THE BATTERY HAS A PROBLEM, HAVE THE ALTERNATOR TESTED FOR PROPER OPERATION.

Nov 06, 2009 | 1998 Dodge Grand Caravan

1 Answer

Changed the altenater and the battery keeps going dead


a battery replacement is common to replace after a alternator replacement because you jump your batter a few times unti lyou find out your alternator is dead after that many jumps the battery will be shot

Nov 03, 2009 | 1994 Mazda Navajo

1 Answer

My 99 pontiac grand am cuts off


Hello www_dollar_b: I suggest having the battery tested. In most cases in my experience of vehicles starting and running poorly in cold weather, the batter is bad, not dead just yet, but bad. This is turn will cause the alternator to become faulty and not charge. Once a vechicle is running, the battery merely provides and electrical current to all the lights and other accessories in/on the car. The alternator is what keeps the car charged and running. To test your alternator, loosing the negative battery terminal on the battery...start the car, and pull the negative battery cable off the battery, if the car dies, you need a new alternator (for safe measure it is a good idea to buy a new battery as well, but not necessarily required) if the car stay running the alternator is good, and you may just have a week battery. Also, make sure that all connection on the alternator, batter, starter and ground are clean and secure. Change the fuel and air filter, and also change the spark plugs and wires. It is reasons such as this that it is recommended to perform a routine tune up every 3000 miles, or every 6 months, whichever comes first. When it get really cold out, if possible, store the vehicle in a garage. Also, check and see if the insulation is still intact on the inside of the hood, as this help keep the engine, battery, and other components from being damaged from the cold weather. If you seldomly drive your car during the winter, be sure to go outside and start the car at least 2-3 times a week and let it run until it is at operating temperature. Now would also be a good time to change the thermostat, even if it's not needed; as they are fairly cheap, and can save you a lot of money and hassle in the future. Make sure the radiator is full, and has the appropriate amount of anti-freeze (1 gallon ). If possible, it's good to have the radiator and block completely fushed and refilled with filtered (not tap) water and the appropriate anti-freeze for your vehicle.
I apologize for this lengthy response, however it is my pleasure to aid people with the suggested repair options for their vehicles, and I like to make sure that customers (you) understand fully the processes and procedures, as well as the importance of vechicle maintenance. I sincerely thank you for choosing fixya.com to help you in this matter. Please let me know if I can be of more assistance after reviewing this information. Feel free rate the information as well, at your convenience. Again, thank you.

Apr 01, 2009 | 1999 Pontiac Grand Am GT

1 Answer

Battery is dead and I want to charge it and take it in for replacement


Boost your car with jumper cables and let the car idle or drive around for about 20 minutes for the alternather charge the batter on its own .if the car shuts off after you started it might be your alternather is no good . the reason why ur alternather might not be working is because the batter all it does is give enough power for the starter to crank the engine as soon as the engine starts running it gets all its juice from the alternather and it charges the batter as well. but some times when the alternather works and the batter is dead meaning all the cells inside the batter are dead it will never take the charge from the alternather. so you would have to change the batter.

if you would like to know how you can you test both parts useing a volt-a-meter... just ask...

p.s. I think its ur batter if you never changed it. so get that changed for the winter so you wont have any more starting problems during cold wheaters

Sep 26, 2008 | 2001 Chrysler PT Cruiser

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