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Battery Light

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Old Aug 30, 2013 | 11:52 PM
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Battery Light

Hi all, I have a 2004 F250, running great.... but some days my battery light comes on and stays on when I start the truck. I will drive a couple of blocks and it will turn off... What causes this and should I be concerned?

Thanks,
 
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Old Aug 31, 2013 | 12:05 AM
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Sounds like your alternator is on its way Out

Maybe Batts

Get a Cheap Battery Hydrometer and check the Batts Cells Each one


what volts does the alt kick out??
 
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Old Aug 31, 2013 | 12:27 AM
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ALTERNATOR CHARGING TEST FORD
http://api.viglink.com/api/click?for...13434327170573

Have a DVM At least??
 
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Old Aug 31, 2013 | 12:41 AM
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I just replaced my batteries less than 6 months ago, I guess I will go and have my alternator tested.

Thanks!
 
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Old Aug 31, 2013 | 12:42 AM
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Battery Light

Originally Posted by BLADE35
ALTERNATOR CHARGING TEST FORD
http://api.viglink.com/api/click?for...13434327170573

Have a DVM At least??
What is DVM??
 
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Old Aug 31, 2013 | 12:54 AM
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This




You Really need to check your FICM Main Power

Oh and Still Hydrotest them Batterys Cells

Its Cheap and Accurite

I use one like this Very Accurite
 
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Old Aug 31, 2013 | 09:09 PM
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ok... had my batteries, starter and alternator checked today .... All good!
 
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Old Aug 31, 2013 | 09:29 PM
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I hate to say it but that Battery Light Has Proven to be Very Accurite


Is the Bat Light staying Off???

Maybe a Loose Wire got Played with and tightened Better connection??
 
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Old Aug 31, 2013 | 09:33 PM
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The Deal is the Battery Light kicks On when there is High system Demand right at Cold STartup when Glow Plugs are all On

The Bat Light coming on at Start likely means its weak or getting a Bad Alternator Diode

Do you have anything to watch Volts with??


You have to make shure that your charging system is at 110% or it will KILL the FICM FAST!!

Cheack All Wires Clean them and Smear Vasiline on them Follow the Main Grounds to where they Mount clean there

Sometimes its Cheap Easy Fix Too

You will notice most of the regulars have Upgraded Batterys CCA and went to High Output Alternators with Good Success
 
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Old Aug 31, 2013 | 10:04 PM
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Great Advise Benny, also the batterie cable it self can be corroded at the connection and or Ground.
 
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Old Aug 31, 2013 | 11:22 PM
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Yes Sir^^^Definatly check the Easy Stuff I seen a Bad ground cable or two cause this Bat Light

I spent an hour a Year or two ago with a Dremal tool cleaning all the Grounds and Battery Cable connections Put Vasaline or Grease on them and They stay Corrosion free
 
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