Battery Light - Ford Powerstroke Diesel Forum

 
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post #1 of 6 Old 01-03-2008, 01:54 PM Thread Starter
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Battery Light

When my truck is running the battery light comes on. when I hit the gas and drive it goes away, intill I let off again, then it will flash and come right back on... my amp gauge is in the same spot it has always been, and in the AM, when its been real cold it cranks along time and sounds weak... but it does start.



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post #2 of 6 Old 01-03-2008, 02:50 PM Thread Starter
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bump formyself, its a new low I know i know,....



On vacation from a truck for a year or...
Looking at 6.4s Moving in a few months then hopefully buying my dream truck!!!

Driving an Audi till then...
but at work I drive
16 E-450s 7.3 powerstroke Ambulances
7 Duramaxes
1 GMC Kodiak Ambulance

NO CUMMINS.....
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post #3 of 6 Old 01-03-2008, 02:54 PM
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your alt. is probally bad, which puts an excessive load on your batts. change the alt and have the batts. tested. a bad alt will kill your batterys life span.

brian

05 f350 crew, longbed, 4x4, 68k, lariat


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post #4 of 6 Old 01-03-2008, 02:59 PM
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Initial Battery and Charging System Checks

Have you done the normal checks?

- Battery cells full of distilled water (if the battery has removable cell caps)

- Cleaned and tightened all connections on the cables to both batteries

- Checked the voltage at the batteries with the engine off

- Checked the voltage at the batteries with the engine running

These should give you an idea if you're looking at a battery or alternator issue. Since it changes with engine speed my first guess would be alternator, but giving everything a good once over may find something quick and easy.

----
2002 F-250 CCLB FX4 - AFE2-PG7 Intake, MBRP 4" Exhaust, Odyssey PC1750 Batteries, Roof rack, laptop mount, radio console, and still working..
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post #5 of 6 Old 01-03-2008, 03:05 PM Thread Starter
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ive checked the conections, but have not done volt tests, it should be like 14.5 right?



On vacation from a truck for a year or...
Looking at 6.4s Moving in a few months then hopefully buying my dream truck!!!

Driving an Audi till then...
but at work I drive
16 E-450s 7.3 powerstroke Ambulances
7 Duramaxes
1 GMC Kodiak Ambulance

NO CUMMINS.....
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post #6 of 6 Old 01-03-2008, 03:51 PM
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I would expect about 14.4 fully charged.

----
2002 F-250 CCLB FX4 - AFE2-PG7 Intake, MBRP 4" Exhaust, Odyssey PC1750 Batteries, Roof rack, laptop mount, radio console, and still working..
"I'm sweet and innocent. See my little halo? It may be the world's only chrome-studded leather halo, but it is still a halo." - Me
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