Ford Powerstroke 94-98 7.3L Discussion of 94-98 7.3 Liter Ford Powerstroke Turbo Diesels

Battery Light Stays On

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  #1  
Old 07-20-2011, 02:32 PM
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Default Battery Light Stays On

This isn't really a big deal to me it just gets annoying but my battery light stays on and i don't know why. Whenever i accelerate it'll go away until i let off. But why does it stay on? I just replaced both batteries last fall so they should not be goin bad. I only drive the truck on the weekends now because of school and i make sure no lights or anything like that are on when i leave it. Awhile back i had to hook up a on/off switch running to the starter solenoid terminals because my truck will not start with the clutch pushed in and turnin the key. I had replaced the ign switch and neutral safety switch so I dont know if that switch would be messin up anything or what.
Any help would be nice
 
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Old 07-20-2011, 04:51 PM
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Have you checked the output of the alternator?
 
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Old 07-20-2011, 08:17 PM
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I was thinkin the same about the alternator, sounds weak, what is yer amp readin at idle? if it is only charging when acceleratin then id def check out the brushes in it.
 
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Old 07-21-2011, 12:23 PM
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I bet your alternator isn't charging at idle or part throttle, but when you raise the rpm's it charges the alternator enough to maintain.
 
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Old 07-21-2011, 03:20 PM
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Yea ill check it out this weekend when im back to the truck. but like said the alternator should be fine i just replaced it last summer
 
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Old 07-21-2011, 03:28 PM
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What brand did you use? Autozone can be a real POS w/ alternators. I only use OEM
 
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Old 07-21-2011, 03:34 PM
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i did get it from autozone but i figure costin me that much the dumb p.o.s should last
 
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Old 07-21-2011, 03:45 PM
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No, they are junk. I went thru like 3 of them (including random POS parts going out on them) on my TDI. For starters, alternators, brakes etc, I will NEVER use house-parts again. Only OEM or better.
 
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Old 07-21-2011, 04:50 PM
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theres a hose that lays over the alternator that rubs the wiring harness. move the hose and the light should go off.

that was my experience anyway
 
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