Question about 2002 Pontiac Grand Am

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Car draining the battery , alternator is new, car starts fine but the battery light is on, battery is new also, don't even know... please help pontiac grand am 1996 v6... there is a broken wire , but both ends are tight together ...

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It looks like the wiring needs to be checked, you mentioned a wire that is reconnected, maybe it is damaged in another place, the light comes only if the alternator does not work or is not properly wired.

Posted on Aug 20, 2010


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i would recommend performing or telling your tech to perform a parasidic drain test. because if your battery is dying after a day of no use it sounds like a control module is telling something to turn on when not suppose to and is draining the battery so you will not be able to start it.
hope this helps

Apr 08, 2014 | 1999 Kia Sportage

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Battery light comes on even though battery has been replaced

Take the car to your electrician to check whether the alternator is charging,or not. Because from your saying looks like the alternator is not charging and if this is the fault,is going to drain your new battery.

Mar 03, 2014 | Oldsmobile Cutlass Calais Cars & Trucks

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New battery drains.

I can't imagine how changing the belt would have any effect on the electrical system if the alternator is working.
The way you check for a drain is to disconnect the battery ground cable and use a test light to make the connection between the battery and ground. If there is something drawing power from the battery the light will glow.
Then you pull each fuse from the fuse boxes until the light goes out. You also disconnect the starter and alternator if necessary.

Feb 01, 2013 | 1999 Lincoln Continental

1 Answer

Battery keeps draining even after replacing alternator on 94 gcl 5.2 any ideas

Try this, disconnect the alternator and see if it still drains the alternator, you say new but i know it is rebuilt, and some rebuilders do a terrible job, this is esp true of the so called discount auto parts stores (that is a joke as they often charge more than a dealer) such as O'reilly and others. Buy a Mopar rebuilt if the alternator turns out to be the source of the battery draw down. Also make sure no light inside the truck are on like sun visor lights and so on. Have the battery tested shorted cells cause a draw and will kill the battery overnight, don't over testing new parts as they can be bad, found this out the hard way early in my mechanical career.

Nov 01, 2012 | Jeep Cars & Trucks

1 Answer

New battry keeps running down

If your battery runs down when the car is off and not running, then you probably have a 12volt drain
killiongthe battery. If your problem occurs even when the car is being driven and used, then your alternator may be the culprit, it may not be charging enough. Attach a voltmeter across the + and - battery terminals. Start the car and let it idle without any accessories on. If you get a reading somewhere between 13.75 - 14.75 volts, your alternator is ok.
To check for a 12volt drain, disconnect the negative battery terminal and slowly scrape it on
the negative battery post 3-4 times. If you see any light to medium sparking as you do that, you probably have a 12volt drain killing the battery. BTW, don't be afraid of being shocked, no chance of that. This is extremely light voltage we're taking about here. Any 12volt drain is best left to a professional to trace down. Oh yes, a defective new battery is possiblity, but highly unlikely.

Sep 28, 2011 | 1998 Chrysler Sebring

3 Answers

Picture of battery lights up on dash panel, car starts and runs, coolants/fluids are fine

Your alternator is likely bad. Start the car, disconnect the battery, if it stops you need a new one - or head down to the parts store to ask them to test it on the car for you.

Hope this helps.

Feb 18, 2011 | 1997 Ford Escort

1 Answer

Mysterious battery drain

you not only should be getting tired of jump starting your car, you battery is also .. modern batteries can only be deep discharged a few times .. so each time you allow it to do that you have removed a significant portion of the batteries life ... usually the problem is caused by a light not turning off ... like the trunk or under hood light .. even the glove box light .. in your case of overnight discharge i would guess that something is drawing about 7 amps .. thats more than most lamps .. now since you have had trouble with your rear defroster i am suspecting that it is staying on .. there is a relay that controls that .. that relay may be stuck on .. feel the defrost element to see if its warm . you can disconnect that defroster or pull its fuse to test that theory .. also you can remove bulbs to see if thats the problem .. once in a while yoiu see a shorted diode in t he alternator (even new ones) .. that should have been tested when they installed or tested the alternator .. since the current is so high then whatever is drawing that much will be warm to the touch .. until you find the problem, you have little choice but to disconnect the battery each night or hook up a charger .. one way to trouble shoot if you dont have equipment is to do the following:
1. disconnect the battery
2. clip lead a small 12volt light bulb between the battery and the connector ... the bulb might glow dimmly ..
3. if somethng is drawing lots of current then the bulb will glow brightly .. disconnect things one at a time until the bulb dims.

many auto parts stores have test equipment that can test for leakage .. they wont have time to troubleshoot but they can tell how much leakage there is ... that service is often free ..

Jun 23, 2010 | 1994 Geo Prizm

3 Answers

2001 530i battery drain/alternator question

first off never never never trust a tow truck driver they are idiots, it takes a BMW 15 mins to go into a sleep mode before a draw can be mesured, as for the dealership they should have caught that using the Midtronics batt/alt tester that is standard from BMW 2.5 years for a batt replacement is reasonable especially in a BMW based on the high demand on the electrical system, I just replaced an alt on an M54 enginge just today so they do go bad, have them give you a print out from the midtronics with your VIN on the printout showing your alt is bad and what the batt is.

Mar 29, 2009 | 2001 BMW 5 Series

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