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Old 09-28-2015, 07:02 AM
curiousabnormality curiousabnormality is offline
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Question Battery Light -Ideas?

My battery light came on while I was driving. I wasn't too concerned so I continued on about my day as usual, no starting issues, flickering, ete.
I decided to check the battery and alternator just in case. The battery was reading the proper voltage, and the alternator is charging the battery at the proper rate. Just for good measure I even had the guy at auto zone use their beefed up voltmeter (multi-meter? Idk) and everything read fine as well.The light periodically comes back but not in any specific conditions. I checked the connection to the battery, everything is tight as a whistle. I suspect its some type of issue with the instrument panel. Though I believe the battery light only relies on a circuit to detect issues, rather than a more advanced method. Ideas?
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2005 Extended Cab "Edge" 2 Wheel Drive Ext. Cab 6.0
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(though basically stock), bottom mounted trailer hitch
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Old 09-29-2015, 06:23 AM
pc3332132 pc3332132 is offline
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Default Re: Battery Light -Ideas?

Here is a link to a description on how the charging system works as well as diagnostic procedures. Reading through it may give you some ideas.

https://drive.google.com/file/d/0ByA...ew?usp=sharing
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Old 09-30-2015, 07:05 AM
curiousabnormality curiousabnormality is offline
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Default Re: Battery Light -Ideas?

Thanks, this is exactly what I needed. I'll post the results once I get around to testing it, for future reference.
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2005 Extended Cab "Edge" 2 Wheel Drive Ext. Cab 6.0
Mods: Updated Radio (Sirius Xm), "Non Stock" tires
(though basically stock), bottom mounted trailer hitch
Future Projects: Panel light LED upgrade, Bed liner, leather/leatherette seat covers, audio upgrade (speakers), Replacement rims (not caps but its peeling!), adding bucket seats in Ext. Cab?.
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Old 09-30-2015, 08:01 PM
sheltonfilms sheltonfilms is offline
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Default Re: Battery Light -Ideas?

Would this happen to have happened at higher RPMs? If so that's an alternator with the internal brushes losing contact, thus dropping the voltage suddenly.
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Old 09-30-2015, 09:11 PM
TB-9862 TB-9862 is offline
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Default

Quote:
Originally Posted by sheltonfilms View Post
Would this happen to have happened at higher RPMs? If so that's an alternator with the internal brushes losing contact, thus dropping the voltage suddenly.
^^^ check for the light at different RPMs. The alternator test machines at the parts stores only run at one speed and might not detect an alternative with a bad voltage regulator. Also watch the voltage meter on your dash when the light comes on
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Old 10-01-2015, 07:58 AM
curiousabnormality curiousabnormality is offline
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Default Re: Battery Light -Ideas?

Quote:
Originally Posted by sheltonfilms View Post
Would this happen to have happened at higher RPMs? If so that's an alternator with the internal brushes losing contact, thus dropping the voltage suddenly.
It was at low speed with little to no acceleration.
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2005 Extended Cab "Edge" 2 Wheel Drive Ext. Cab 6.0
Mods: Updated Radio (Sirius Xm), "Non Stock" tires
(though basically stock), bottom mounted trailer hitch
Future Projects: Panel light LED upgrade, Bed liner, leather/leatherette seat covers, audio upgrade (speakers), Replacement rims (not caps but its peeling!), adding bucket seats in Ext. Cab?.

Last edited by curiousabnormality; 10-01-2015 at 07:58 AM. Reason: Grammar
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