That darn battery light! - Ford Powerstroke Diesel Forum
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post #1 of 9 Old 10-18-2006, 05:30 PM Thread Starter
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Question That darn battery light!

Hi and thanks for the help so far but the battery light still comes on when you first start and then will usually go off after a few minutes but will then kind of come on and offf sporatically ---i've checked batteries and alternator and both seem to be charging i've checked all the fusible links i could find around battery, connections cleaned and looking good---anyone have same problem that could give a hint as to what direction to look in ---thanks again for all the help it truly is appreciated!! Ron
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post #2 of 9 Old 10-18-2006, 07:30 PM
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That darn battery light!

I had the same problem with my 02 f-250 it ended up being the belt was worn and strechted out causing it to slip. I would suggest if everything else is ok then I would check your belt and see if it is time for replacement.
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post #3 of 9 Old 10-19-2006, 01:39 AM
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maybe the tensioner is worn. i dont know if you replaced your alt or batts. yet but if one or both the alt or batt is bad, youll have problems till you get them replaced.

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post #4 of 9 Old 10-19-2006, 02:48 AM
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Id check belt tension first like the guys before me said, but if its fine, it could be the voltage regulator on its last leg. I had this problem with my mustang before.

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post #5 of 9 Old 03-29-2007, 05:08 PM
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Hey guy's going threw the same problem right now. My alternator went out on me so I changed it, and no my light Battery light will flash when I am driving when ever it wants seems on bumps. I have tightened everything down and cleaned everything and also retested Alt and batteries. How do you check it the tensioner or Belt are bad? Where is the Voltage Regulator located and can you test it? Thank you
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post #6 of 9 Old 03-29-2007, 06:17 PM Thread Starter
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battery light?

My problem turned out to be the alternator, even though it was brand new it turned out it was defective but it checked out fine while on the truck but a bench test proved it was bad --soon as i replaced it, light went off!
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post #7 of 9 Old 03-29-2007, 07:59 PM
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Have you checked

the alt and batts under a load with a load tester.
post #8 of 9 Old 03-29-2007, 07:59 PM
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Thats what i was thinking too, And i got a bench test done, and came out good, but i wanted to be fore sure.So i took it to another place and they said it was good also.
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post #9 of 9 Old 03-29-2007, 08:00 PM
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No, I don't know what a load tester is?
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