Question about 2003 Mercury Grand Marquis

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Why is battery not holding a charge? Replaced alternator & battery

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Have you had the charging system tested on the car ?
Is something draining the battery overnight ?

Posted on Jul 15, 2013

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1 Answer

Battery not charging indicator. What could be my issue?


Who did the testing & did both the
battery & alternator fail at one time?

Auto Zone has a repair facility & did the work?

What codes are present?

Did anyone look at a data base, to see what
the message your getting was & the solution?

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1999 Toyota Tacoma battery keeps dying


This is easy to test but you need a multimeter. Connect the multimeter to the battery and run the engine at a fast idle (say 2000 rpm). You should get a voltage reading anywhere from 14 to 15 volts if the battery is fully charged and the alternator is working. If the reading is around 12 volts, then the alternator is not working.

Jul 09, 2017 | Cars & Trucks

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My battery dies i replaced a brand new alternator but still dosen't charge tomthe battery


The battery most likely has dead cells and not charging due to the alternator .The alternator is doing what it should, your battery just can't hold the charge the alternator is putting out. Go have the battery tested at a local auto zone or advance auto store. Free to check

Dec 15, 2011 | 1995 Ford Windstar

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2004 ford expedition charging system failed?


Sounds like battery not holding charge. Or a light staying on, boot or glovebox? Most likely battery tho.

Nov 16, 2011 | 2004 Ford Expedition

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My battery has been draining and not holding a charge. I had my alternator rebuilt and the problem was still there, then i changed my battery because it was bad so i replaced that then noticed my clamps...


I had a 1992 dakota for 18.5 years

Have you put an amp meter in one of the battery cables,
to see if you have more than 30 Milli-Amps?

Only the computer & radio clock stay alive all night

Your alternator. Rebuilt how? Are the diodes leaking
& killing your battery?

What Codes do you have?
I will look in my 92 manual for you

Disconnect the alternator overnight

Next start pulling fuses with that meter in there, until
you find no current draw large enough to run a battery down

The ignition switch may be bad & powering the alternator field
all night. Have to check wiring diagrams for that

Sep 24, 2011 | 1991 Dodge Dakota

3 Answers

Replaced alternator and battery. Battery light continues to stay on-- battery will not hold charge. Fuse was checked and is ok.


Go to the battery positive terminal is ther a 30 or 40 amp fuse you ll have to visually inspect to see if its open, you also need to look in power junction box and look at the big green fuses some orange and some red the big ones not the small one, check to see if any are open more than likely the fuse are open

May 06, 2011 | 2004 Hyundai Elantra

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2003 protege5 wont start unless jumped and dies after about 30 seconds.


Need to check battery condition first. Is it the original battery? If yes chances are it needs to be replaced. May have a dead cell or 2 & will not hold a charge. When it ran before this, was the check battery/charging light on? Also verify charging system is working correctly.

Jun 22, 2010 | 2001 Mazda Protege

1 Answer

I've replaced the battery and the alternator on my 2003 Isuzu Rodeo. But when traveling for several hours with headlights on the battery will go dead and the alternator won't charge till it cools off....


Sounds like there's still something wrong with the charging system. Did you verify alternator output?
(Volts/amps) Should charge at about 13.5 - 14.5 volts when engine at medium idle. About 65 amps w/o a/c, about 85 amps with a/c. If you've got the non a/c alt in a vehicle with a/c, amps falling short may cause intermittent charging/problems.

Does engine exhaust leak blow on alternator? Had this symptom before-it can ruin your alternator also.

Battery going dead-either the battery won't HOLD a charge or the alternator is not charging it. One or the other is your problem. Verify alternator output as described earlier, then need to do a LOAD test on the battery with a full charge.

Hope this helps.

Mar 19, 2010 | 2003 Isuzu Rodeo

2 Answers

Just replaced my drive belts and know my battery is not holding charge. I had the battery tested and re charge everything was good there, How could I check the alternator?


you need a voltage tester, the way one works is you plave the pins in the battery terminal positive to positive, neg. to neg. you then continue by moving the slector on the tool to the RPM/AMP position it should read atleast 14 amps

Jan 22, 2010 | 1996 Acura TL Series

1 Answer

Battery replaced - won't hold a charge. Is the alternator the problem?


THE BATTERY IS ONLY FOR STAR THE CAR. WEND THE THE CAR IS RUNIG ALTENATOR IS CHARGING THE BATTERY FOR NEX TIME YOU NEED TO STAR THE CAR . CHECK CHARGE ON THE ALTENATOR . IF ALTENOTOR NO CHARGING REPLACE.

Apr 17, 2009 | Mazda 626 Cars & Trucks

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