1999 Ford Expedition Logo
melba
melba Posted on Mar 24, 2015
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I have a 99 ford expedition I changed the alternator on it by my battery light is still on and its like my alternator is charging my battery what could be the problem

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Russell Mower

Russell Mower

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  • Posted on Mar 24, 2015
Russell Mower
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If light is on alternator is not charging recheck your steps for connections

5 Related Answers

rockys performance motors

  • 303 Answers
  • Posted on Dec 10, 2008

SOURCE: 2000 Ford Ranger Alternator

have the alt tested there not very good do you have 12 volts going to the big wire on the alt and with key on you should have it to a small wire going to the regulator to turn it on

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Anonymous

  • 7 Answers
  • Posted on May 21, 2009

SOURCE: battery indecator light on on dash

Check to make sure that there's power from the alternator to the battery on the charge-back wire. If nothing's there, then your alternator is junk and you'll have to replace it again.

Anonymous

  • 1 Answer
  • Posted on Jun 21, 2009

SOURCE: I had a charging system

i had a similar problem with my 2000 ford expedition. After 3 new alternators and a new battery i figured out it was a 20 amp alternator field fuse blown located in the under the hood fuse box. Good Luck!

Anonymous

  • 58 Answers
  • Posted on Feb 27, 2010

SOURCE: Ford 2003 Expedition EB. Check Charging System

Its probably the alternator. It will need to be tested on the vehicle with the engine running and the light illuminated. Measure the battery voltage with the engine running. It should be at least 13.5 volts. If it is lower have the alternator tested at a shop with a charging system tester.

Anonymous

  • 4803 Answers
  • Posted on Jan 31, 2011

SOURCE: 2005 Ford Expedition, Battery drained, charging

The "Charging Sytem" includes the battery, the alternator, the voltage regulator and all related connecting wires and cables. If the charging system was tested and it tested "good" then all of these components are working properly.
If your charging system is good and you continue to have a dead battery, then you probably have an "Ignition-Off draw". This means that something is staying on after the ignition is shut off. This could be interior lamps not shutting off due to a bad door switch, or the headlamps being left on, or some other electrical component in the vehicle that is malfunctioning. If this is the case, then you need to have your vehicle checked by a competent Service Technician who, using the proper equipment and techniques, can locate and repair the source of the problem.

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0helpful
2answers

I got ford expedition 2004 5.4L Battery light on I change alternator, Fuse link but light still iluminating. Starter, battery and alternator has been test 3 different places,All test 3 components good
Did anyone hook up a scan tool an check for DTC'S - diagnostic trouble code's ? Charging system controlled by the PCM - engine computer .
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Nov 05, 2017 • Ford Cars & Trucks
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I have a 99 Ford Expedition I was coming home and the battery light came on. Went to the part stor and put in a new battery,now my heater won't turn on and my light don't turn on and my gauges jump around....
This sounds more like a faulty alternator. Sometimes an alternator can still produce adequate voltage and amperage to keep everything running, but they are governed by a voltage regulator. If the regulator goes bad, the alternator may have little of no output, or it will not limit itself properly causing gauge problems, and various light on the dash to not work or sporadically come on.
I'd take the vehicle to have the alternator tested at least.
Don't settle for one of the part store tests, they won't give you all the information you will need. A properly working alternator should charge anywhere between 13-14.6 volts and depending on the vehicle 90-150 amps.
I hope this helps in some way
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Feb 24, 2015 • 1999 Ford Expedition
0helpful
1answer

I have a 99 ford expedition eb ive had the battery n alternator tested both reading at the right volts but the battery keeps dying.... ive made sure every thing was tight n where they should be n...
If the alternator is charging the battery, and it goes dead overnight, you have a short to ground in the wiring that is draining the battery.
You can try disconnecting the negative battery cable and see if the battery stays charged when the engine is off.
If it still goes dead, the battery could have a dead cell.
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Sep 23, 2013 • 2005 Ford Expedition
1helpful
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Describe your 99 ford expedition the battery light turns off and on and then the battery started and loss charge. The truck battery was so lo that the lights turned off. Now the truck wont start its dead.
Possible that the alternator is faulty , the charging section of the voltage regulator charger is faulty, finally there is some heavy shorting in the circuit or a possible poor ground connection from the battery to the chassis.
You will need to charge the battery and recheck once again to confirm , check the charging voltage and check the drain.
Find this link useful:

http://www.fixya.com/cars/r5824824-draining_car_battery_charge

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Feb 19, 2011 • 1999 Ford Expedition
0helpful
1answer

The battery light is on, check charging system communication is displayed. Have changed battery with no change.
it may be the alternator thats not charging or its a over charge. at battery with engine off should read at least 12.8 to 13 volts, when engine is running, at battery voltage should be at least 14 to 14.2. if running and not producing about 14 volts. the alternator is bad, or the belt is slipping. check alternator voltage. have a good day !!
Read full answer
Dec 03, 2010 • 2004 Ford Expedition
3helpful
1answer

Ford 2003 Expedition EB. Check Charging System
Its probably the alternator. It will need to be tested on the vehicle with the engine running and the light illuminated. Measure the battery voltage with the engine running. It should be at least 13.5 volts. If it is lower have the alternator tested at a shop with a charging system tester.
Read full answer
Feb 27, 2010 • 2003 Ford Expedition
1helpful
1answer

Battery light is on after alternator change
have u ck the new one,,,it could have a bad stater in it,,
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Feb 20, 2010 • 2003 Ford Expedition
2helpful
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I have a 2000 Ford Expedition. The battery was
Hi:
The battery light is telling you that you are running off the battery,and you have a problem with your charging system. An easy way to check your alternator is to get a volt meter, and measure the voltage of your fully charged battery. with your expedition not running, it should read about 12.6 volts. When you start your expedition, it should read approx 14 volts if your alternator is working properly.
Of course, check all of your connections first, and most auto parts stores will check your alternator out for free, so they might have a chance to sell you one!
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Nov 20, 2009 • 2000 Ford Expedition
4helpful
1answer

I had a charging system issue on my 99 Ford Expedition which completely drained the battery, the battery light came on while discharging which brought the problem to my attention before draining the...
i had a similar problem with my 2000 ford expedition. After 3 new alternators and a new battery i figured out it was a 20 amp alternator field fuse blown located in the under the hood fuse box. Good Luck!
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Apr 17, 2009 • 2001 Ford Expedition
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Ford Expedition Battery and system charge warning
If he replaced the battery that would have cleared the code. There is another issue. Was the alternator aftermarket? Just becuase it is new does not mean good. Those are easy to install I would return it to where you got it and try another.
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Oct 08, 2008 • 2003 Ford Expedition
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I got ford expedition 2004 5.4L Battery light on I change alternator, Fuse link but light still iluminating. Starter, battery and alternator has been test 3 different places,All test 3 components good

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