Battery Light on but good voltage - Ford Powerstroke Diesel Forum
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post #1 of 13 Old 07-02-2008, 03:10 PM Thread Starter
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Battery Light on but good voltage

Driving on the highway today I looked down and out of the blue the Battery indicator light was on but the voltage meter was still reading normal. Shut the truck on and off stopping certain places, but the light wouldnt go out. I havent tested the voltage of the batteries or the alternator yet but wanted to see if there was any pointers or ideas on what might be the issue.



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post #2 of 13 Old 07-02-2008, 03:18 PM
duct tape & zip ties

 
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Need to do the tests on the alternator and batteries. It didn't come on for no reason.


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post #3 of 13 Old 07-02-2008, 09:33 PM
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check the wire on the back of the alternator make sure the connection is clean and tight ... I had that issue in my 550 and it was the wire on the alternator not getting a good contact

1999 F250 XLT 2WD 7.3, 6 spd, South Bend Con OFE, Detroit Truetrac, Tony Wildman tunes, Autometer Boost&Pyro, AFE Stage II, 4" MBRP Exhaust, 2" Daystars, 17x9 DC1 wheels wrapped in 33x12.50 MTZ's

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post #4 of 13 Old 07-17-2008, 02:15 PM
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my guess is alternator

I had the same problem recently. It turned out to be a bad alternator. The alternator checked fine with the portable check machine, took it off and it checked good at the alternator shop, still had red light on. Decided to replace it anyway, and guess what, red light went off.
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post #5 of 13 Old 07-17-2008, 05:43 PM Thread Starter
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yeah i just replaced it because the autoparts machine said the regultor wasnt getting any voltage.



06 CCSB Lariat 102K
Factory 20s w/ Nitto Trail Grappler 35X12.5X20
Vegistroke 75,000 miles
2.5" Readylift Level
ARP Head Studs
EGR delete
Swamps 58V FICM
Isspro Gauges, EGT, Boost, Trans.
20ft of 4" straight pipe!!
SCT X3 BAMF Innovative Xtreme Race


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post #6 of 13 Old 07-17-2008, 05:54 PM
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had the same problem on a 97 p.s. it was a broken wire on alternator plug

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post #7 of 13 Old 07-17-2008, 06:29 PM
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Quote:
Originally Posted by 95and05 View Post
had the same problem on a 97 p.s. it was a broken wire on alternator plug
+1 for me too

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post #8 of 13 Old 07-20-2008, 04:45 PM
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Just had the same problem, symptoms, and indications last week. Replaced the alternator and all is well. It was a very easy fix.

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post #9 of 13 Old 07-20-2008, 04:52 PM
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yep its usually the alt, and ya prob the easiest thing to change on the truck

studs,egr delete(sinister),dieselsite coolant filter, nuc oil bypass, dj's fuel + regulated fuel return, sct by eric, 4in silverline no cat, isspro gauges, cat elc coolant, hids, lots of other odds and ends......
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post #10 of 13 Old 07-20-2008, 05:12 PM
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Yeah I'm thinking alternator too. It took me about 2 minutes to remove it. Get it tested for free at an Advance Auto or somethin.

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