Question about 2001 Ford Expedition

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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 system. We have replaced the alternator with a new NSA alternator 130A and it appears we haven't resolved the problem, the battery light is still on. Do we need to excite the system, if so what do we need to do.

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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!

Posted on Jun 21, 2009

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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.

Sep 23, 2013 | 2005 Ford Expedition

1 Answer

Battery not getting charged although the alterator is putting out.truck will run but kills battery after its been charged with a charger....gosport1@hotmail.com is my email.


Does it die while running? Check the voltage at the battery with the truck running to see if it is getting the same voltage that the alternator is putting out. Will it not start after sitting for a bit? It could just be a bad battery not taking a charge because the lead plates or the terminal inside the battery is broken. You may also have a drain on the battery that is discharging it. You can check for a drain by disconnecting the negative cable and hooking a test light in line between th negative battery terminal and the cable. If the test light lights up bright, there is a drain and you can start pulling fuses one at a time to see what kills the light.

Apr 08, 2011 | 1999 Ford Expedition

2 Answers

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

Feb 19, 2011 | 1999 Ford Expedition

1 Answer

2003 ford expedition, 5.4L 4x4, it has spark, has fuel, no codes in computer, new battery died along the road. turns over but will not start, the starter seems to be laboring while turning and drops from...


Okay, seen this before and its part of the Antitheft system or Power Minder system.. You need to pull out the new battery and charge it to at least 13.2 Volts. A fully charged Battery goes from 13.2 to 13.4 Volts. The Antitheft system and Power Minder will actually disconnect the charging circuit while you are driving. It takes a certain minimum voltage to keep the charging circuit working.

I have jump-starter similar trucks and even if you have a Battery charger running, within 5 minutes of removing the Boost, the charging circuit will default and the Battery will discharge. The 7 Volts is about 1 Volt more than we had to our Starter.. The Power Minder system reads the discharge from the low Battery voltage and kills the power circuit to save the Battery drain. The Antitheft wants to kill the Starter for theft protection.

Someone should open a case with the NHTSA on this. But replacing a Battery is so random to Battery life expiration that the Engineering problem will be overlooked. I hope my solution is very helpful to you, but about all you can do is Zap the battery to the Max. The underlying problems will remain underlying until Ford does a TSB on this.

Jan 29, 2011 | 2003 Ford Expedition

1 Answer

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.

Feb 27, 2010 | 2003 Ford Expedition

1 Answer

1998 expedition wont start


check if you have power at the starter solnoid if so you may need a starter

Jul 08, 2009 | 1998 Ford Expedition

2 Answers

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.

Oct 08, 2008 | 2003 Ford Expedition

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