Question about 1990 Pontiac Firebird

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I put a new battery and alternator but my battery keeps running dead and ive had the alternator tested and its good. what should i do

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Remove all the battery cables and clean them out. If you have an aftermarket cd player, I would check the wiring, especially the ground wire because that could drain the battery.

Posted on Jul 29, 2010

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1st test 4 draw
2nd while the car is running see how many volts are at the battery

Posted on Aug 05, 2010

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1993 Mercury Topaz red light came on that looks like a battery. Put another altanator in and battery but light still on ?


must be a bad wire if you put a new battery and alternator in it. Are you sure the battery and alternator are good. One way to test the alternator is to run the engine and disconnect the battery [one post] while the car is running. If the car keeps running, the alternator is good. If engine cuts out and shuts off, alternator is bad

Jul 27, 2014 | 1993 Mercury Topaz

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Battery going dead when truck is not running


If the battery isn't over 4 years old, then you
have to pull one fuse at a time or put an amp
meter in series with either battery cable to see
where the drain is.

Some Module may not be timing out or there is
a problem with the alternator

Every vehicle is wired different ,simply can't give you
a specific cause,has to be tested in the proper way
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Nov 16, 2012 | Ford Cars & Trucks

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Dead battery, replaced battery and alternator but still no charge!


if its not charging while running at14.5 volts or so you have a charging problem mabey no power to the alternator if its charging at 14.5 or so and the batery load tests good and its going dead over night you have a draw from some component in the system.

Dec 19, 2011 | 1994 Oldsmobile Cutlass Ciera

1 Answer

Stored 2yrs. installed new battery. won't keep charged. dead next morning.


You didn't mention how far if any you drove since installing battery. First jump start, put voltmeter in battery while idling - should read 13.1v-15.8v. Anything less, replace alternator. If good, load test new battery.

Mar 21, 2011 | 1986 Chevrolet Corvette

1 Answer

Ive got a 1991 Eagle talon turbo with 5 speed trans,ive replaced the battery and alternator and still wont charge?


If you know for sure that the alternator is good then use an Ohm meter to check set to DC 20 when the car is in the ON position but not running. Unplug the alternator and put the red end on the positive side of the alternator plug and touch the negative to any other metal surface. Should be the same reading as your battery is when you do the same test on the battery. If not, then the wiring is bad and needs to be replaced.

Just because something is new doesn't mean it works so if this test doesn't work, take out the alternator and have it tested.

Also check fuses!!!

Sep 16, 2010 | 1991 Eagle Talon

1 Answer

My battery wont keep its charge or charge properly ive tested the


Go to an auto parts store and buy a load tester for the battery. It doesn't cost much and sometimes if you bring the battery there they will test it for you with a load tester. It may have a dead cell which won't allow it to hold a charge or put out enough power. If you need a battery, some shops will install them for free. Good luck.

Apr 20, 2010 | Renault Sport Cars & Trucks

2 Answers

2002 VW Jetta GLI 2.8 V6 All dash Lights came on Battery Dead (new Battery) Pulled Altenator and had tested (tested ok) Altenator belt torn on side, could this cause problem? What could it be?


this does sound like a bad alternator,have the battery tested and check the connection at battery and positive feed cables form battery,next time all the lights come on have the charging system check dont remove alternator,also make sure the power cable to alternator is good,ive had a few of these they get hot and dont charge, have them tested and they tell me its good, put it back on car and customer is back again,i replace the alt and problem solved. hope this helps.ps check the alt fuse.

Mar 03, 2010 | 2002 Volkswagen Jetta TDI

2 Answers

The alternator is still good but everytime i jump start the car it makes it half a block and dies.


Your alternator is charging however it is not still good if it does what you are stating. Also what is the condition of your battery if you have to keep jumping your car? Car batteries don't like to be completely discharge and may not hold there charge again once run dead and may need replaced... Alternator has to have be bad as it needs to be load tested to best determine it's true output. Most auto parts stores do a run test and no load test. Load test will tell amperage rate and true quality of an alternator.

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2 Answers

97 dodge dakoata main fuse keeps blowing 140 amp fuse


Regulator in alternator obviously faulty, have it bench tested & fixed or replace alternator, and cure your problem.

May 19, 2009 | 1997 Dodge Dakota

1 Answer

Charging system


change your battery cables and check all wires on the alternator for loose connections, expecially the grounds.

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