Question about 1998 Dodge Stratus

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Alternator & battery test good...alternator is not charging bat.

1990 Mitsubishi Eclipse. Car runs until battery is drained. Alternator is not charging the battery.
Thanks for any help.

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  • Anonymous Mar 24, 2014

    alternator tested and working fine, but not charging battery

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You might check the fuses and battery cables

Posted on Jul 03, 2009

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1990 Mitsubishi Eclipse

You have several choices;
) You can get the alternator check at an auto parts store. Most do it free. You will have to take it off.
) You can get the entire charging system check at Sears. The checkup is free.

Posted on May 30, 2009

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Posted on Jan 02, 2017

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5 Answers

Can a bad alternator cause a battery to die overnight?


A bad alternator no longer charges the battery, the battery will die once it is drained. This will occur more rapidly when using equipment that runs off of the battery( lights, heater blower, windshield wipers etc.) even electronic ignition will run down a battery. Your battery just went over night the alternator may have stopped working long before. Go to an auto parts store that offers free testing to make sure it is your alternator before making repairs.
Good luck.

Apr 20, 2015 | 2003 Chevrolet TrailBlazer

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99 Mitsubishi battery drains


You have an electrical short issue. Check all your earthing connections to the vehicles body. Check the earthing to the engine and check for any damaged wiring causing to earth on the body. Check your sensors etc. Good luck!!

Sep 30, 2017 | 1999 Mitsubishi Eclipse

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Mitsubishi Diamante 2002 - slow battery drain when not running.


This problem may be a drain or a bad battery or alternator.

The first thing to do before going on trying to find the system that is draining the battery would be to have the battery tested and charging system tested.

A weak battery will seem ok after the car is jumped or will barely start the car and the alternator will charge it even though the alternator is overworking due to weak battery and during the day or when car does not sit long it will seem ok. then when car sits overnight or a few days battery will weaken on its own, making it look like a drain,

so first step is battery test and alternator/charging system test.

Jan 06, 2013 | 2002 Mitsubishi Diamante

1 Answer

Got new head gasket installed-not related to prob.after that bat.went dead,new bat and alt. still drains bat overnight. could it be a short in starter?


Check the main alternator fuse. It is either a block fuse in the fuse box under the hood or it is built into the positive battery terminal. If it is blown your battery will not charge even though everything else is in perfect working order and the alternator light(charge light) on the dash will not light up to tell you there is a problem. You will drive a short distance and the battery will go dead. After recharging it will start right up run OK till it runs out of juice again and dies, etc. Find the fuse and check it is not blown. It is a frustratingly simple fix to a hard to diagnose problem.

Aug 18, 2010 | 1998 Mitsubishi Eclipse

1 Answer

After charging battery car will run around aprox.2 hours battery will drain car will stop running. altanator has been checked and is in good condition


the battery could be faulty and disscharging itself> check when engine is running with a volt meter to see is the alternator charging it should be about 13 volts at the battery poles

Apr 16, 2010 | 1993 Mitsubishi Eclipse

1 Answer

1997 eclipse has to be charged every day in order to drive


There seems to be a no charge state in this case. I recommend checking the charging system. use the procedure below to isolate this issue.

Wear protective eye wear and clothing and remove all jewelry when checking your battery and charging system. Jewelry is a good conductor of electricity and is not recommended. Most batteries wear out every 3 to 5 years and need to be replaced. Always replace your battery with an equal replacement battery to assure proper operation. Automotive batteries have a +positive terminal (red), - negative terminal (black). Electricity is stored in the battery and then supplied to the vehicle when the engine is not running. While the engine is running the vehicles alternator charges the battery for future use. (Note: never disconnect the battery while the engine is running. If the battery cable is disconnected from the battery a spark can be generated which can cause the battery to explode or a major electrical malfunction to occur.)

To check a battery surface voltage, remove the positive terminal protective cover. Connect the +positive side meter lead (red) to the positive side battery terminal. Connect the - negative (black) side meter lead to the negative battery terminal. With the vehicle not running and the car sitting over night the battery voltage should be between 12.5 and 12.8 volts.(You will need to use a voltmeter for this testing procedure)

The alternator is rotated by a drive belt driven by the vehicles engine while it is running. Electrical voltage and amperage are generated to recharge the battery and supply voltage to the electrical system of the car. The alternator is held in place with mounting bolts. There is a main electrical wire on the rear of the alternator that supplies voltage to a main voltage junction box. If your alternator is not charging properly, your battery will slowly drain down from operating all the electrical systems in your car and stop the car from running.(most non charge states will be the cause of a loose belt or a low tension rate, due to a mis-adjusted alternator. make sure you have enough tension in the belt for full rotation of the alt pulley)

Next, you will need to check the alternators output with the Amp meter.

Testing the amperage output of the alternator is good for measuring the amount (not the level) of voltage the alternator can produce. This test can be tricky because if the alternator is weak it can still show it as producing amperage. Which is good, but if the voltage is low, it will still allow the battery to go dead. To check the amperage output of an alternator an amp meter is needed. Once the meter is connected start the engine. Next turn on all electrical accessories and raise the engine idle to about 1200 RPM. The alternator should output the max amperage it was designed to produce. Example: a 90 amp alternator should output about 88 amps. Note: An alternator cannot sustain maximum output for long periods of time. If the alternator is forced to operate at maximum output it will overheat and fail. An alternator is designed to operate at max amperage output only for a reasonable amount of time.

((Connect the voltage meter lead the same way you would in a battery static voltage check, Start engine (do not drive) at engine idle the voltage should be between 13.6 to 14.3 volts. If not the alternator may need replacing.)))

Dec 22, 2009 | 1997 Mitsubishi Eclipse

1 Answer

My car started dying and now hasnt enough charge to start


sound like bad battery cables.replace them.the positive battery cable is old and have a lot of resistance not allowing power to the alternator to charge battery.if battery cable good check alternator connector wires.make sure they are not damage also check alternator fuse and fuse link.turn off radio before removing battery wires so you wont lose radio code.

Nov 29, 2009 | 2000 Mitsubishi Eclipse

1 Answer

2000 Dodge Ram cargo van trouble starting and once started will not keep running tried jumping battery and no change what should we try next?


Sounds like the alternator is bad (not charging). If your battery is good/charged it should run until the battery is drained. If the battery is bad/not charged the car will die as soon as the cables are taken off as there is not enough juice to run the ignition system. If the alternator is good (but battery bad) the car would still run as the alternator makes power to run the car but becasue the battery is dead/drained there is no power to start the car (hense needing the jump). Have the alternator/charging system tested

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Replaced alternator, now car won't start


disconnecting the battery on an alternator is a no no. that was how they used to ck generators but an alternator can be damaged with no load in the circuit. Try changing out your MAF sensor. 1st sensor coming out of the air cleaner. good luck.

Jun 14, 2009 | 1997 Mitsubishi Eclipse

1 Answer

Battery drain on 1990 Ford Tempo


HELLO CHARGE THE BATTERY UP AND START THE CAR AND PULL THE POSTIVE CABLE OFF THE BATTERY IF IT SAYS RUNNING YOUR ALTERNATOR IS WORKING BUT IF IT DIES THE ALTERNATOR NEEDS TO BE REPLACED

Mar 01, 2009 | 1990 Ford Tempo

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