Question about 2003 Ford Mustang

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My mustang first appeared to have a bad battery, but the battery is fine. The alternator is charging. Car just doesnt want to turn. I dont think it is the starter. I finally started it by jumping it off another car. Why would my car, with a full battery, not start unless it is jumped? I did notice that I had to bump the key a few times when it finally started.

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  • 17 Answers

Have the battery checked with a load resistor (Pep Boys, Auto Zone....) The battery may have 13.2 V but not enough current to crank the engine.

Posted on Jun 26, 2009

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New battery. abs, battery and service engine lights come on. all headlights and tails flicker and car dies and wont start. jump it let it warm up and doesnt do it for awhile. then at some point it does it...


These are all signs of a bad alternator. The car is running off of only the battery. The alternator charges the battery and keeps the car running. When the alternator quits charging the car will run fine until the battery dies. Then you can jump the battery and charge it, and the car will run fine until all of the electronics and lights run the battery down again.

Jan 25, 2011 | 2000 Pontiac Grand Prix

1 Answer

The car is not holdong a charge. I replaced the Battery about a year ago. Today I replaced the alternator. I used jumper cables it ran for about 20 minutes and then died again. All the wires look good. Any...


FIRST, YOU MAKE SURE THE BATTERY IS FULLY CHARGED.. A GOOD BATTERY WILL GO FOR 12 HOURS EVEN IF THE ALTERNATOR IS NOT WORKING.. SECOND YOU TURN THE CAR ON.. ONCE THE CAR IS ON. YOU DISCONECT THE BATTERY,, IF THE ALTERNATOR IS GOOD , THE CAR SHOULD REMAIN ON WITHOUT A BATTERY.. IF IT SHUTS DOWN , YOU HAVE A BAD ALTERNATOR OR THE WIRING IS WRONG ONE OF THE TWO.. SHORTS ON YOUR WIRING CAN CAUSE THE BATTERY TO LOOSE POWER.. BUT NOT THAT FAST. BECAUSE IF THE SHORT WAS TO SERIOUS.. YOUR WIRING WOULD BE BURNED.. COMPLETELY..
IF THE ALTERNATOR IS OKAY,, REPLACE YOUR BATTERY,, MOST OF THE TIME BATTERIES GO BAD EASY WITH ANY LITTLE PROBLEM THE CELLS BURNOUT AND THEY DONT HOLD A CHARGE EVEN IF FULLY CHARGED THEY WILL LOOSE POWER IMMEDIATELY .. I THINK THAT IS YOUR PROBLEM.. SINCE IT ONLY LASTED LIKE 20 MINUTES.

Dec 14, 2010 | 1996 Isuzu Rodeo

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I pulled into the gas station the other day, and turned the car off. I walked in and back out and went to start the car. It wasn't turning over. Car has ran fine for 170k and now this. I replaced the...


Definitely , Without a battery you will have no power to start your engine. You should have your alternator checked as well most part stores will do this check for you for free. You could have a bad cell in the battery or perhaps it's just time for a new battery and possibly alternator.

Nov 14, 2009 | 2000 Buick LeSabre

1 Answer

Car not charging


The battery is bad, replace it

Aug 19, 2009 | 1994 Ford Mustang

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93 LX 5.0 replaced battery, ran fine then would not start


sounds like you have a good battery, get the car started put a voltmeter to wire connected to the back of your alternator. if you have at least 13.25 volts you have a good unit if any lower replace the alternator
the click sound you are hearing comes from your relay it is getting low voltage from the battery. because the battery has no juice caused by a bad alternator


hope to help shack

Apr 15, 2009 | 1993 Ford Mustang

1 Answer

My mustang is smoking and making a screeching sound.


You have a Bad Belt Tensioner and will need a new one and Possibly a new Belt. Have the Alternator Checked also. It could have gone Bad during these Problems. If the Tensioner is Not keeping the Belt very Tight it will not allow the Alt. To charge the Battery and it will drain very fast.

Jan 25, 2009 | 1990 Ford Mustang

1 Answer

I have a 84 mustang xl. I think that the problem is electrical but im not sure. The battery has a charge, but it wont turn over, and i dont even have lights, my car wont start what could the problem be?


Could be a broken or disconnected battery cable. If you are sure that the battery has a full charge, and the battery is connected properly (tight clean connection at the terminals) and the lights do not go on (including the brake lights when you step on the brakes) then there is a bad connection at the battery/terminal/cable for certain.

Aug 03, 2008 | 1984 Ford Mustang

2 Answers

96 ford mustang gt charging problem


ignition coil not powering right

also some useful info
batterys are refurbed these days and sometimes an unlucky person can still get a dead cell battery several times even if the you bought brand new
i took mine back 4 times before i found a good one that kept its charge
dead cells dont show them selves very well on battery tests even though dead cell the tester would show good show dont think that there is something definatley wrong you could be in same ditch i was before with my batterys
alternator testers at some shops are not reliable enough i recommend a voltage tester to battery

Jun 08, 2008 | 2006 Ford Mustang

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