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HDGENE, Ford Senior Master/Diesel/Trans
Category: Ford
Satisfied Customers: 5635
Experience:  25 years Auto experience, Ford ,GM, Chrysler, Asian & European
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08 ford f350 diesel battery light came on, shut off engine

Customer Question

08 ford f350 diesel battery light came on , shut off engine and started it up again lite came on after about 2 minutes, checked voltage on the batterys and it was 13.9 volts
JA: Does the light stay on, or does it blink?
Customer: stays on
JA: What is the model/year of your Ford?
Customer: 350 one ton dually 2008
JA: What year is your Ford?
Customer: 2008
JA: Are you hoping to fix this yourself? What have you tried so far?
Customer: haven't done anything yet looking for info on it because it appears that the batteries are charging.
JA: Anything else you think the mechanic should know?
Customer: just that bringing it home after the lite came on checked the voltage at the battery. while engine was running voltage was 13.8 on the left battery and 13.9 on the right so it appears the alternater is working at idle
Submitted: 1 year ago.
Category: Ford
Expert:  HDGENE replied 1 year ago.

Hello, when i still charges and has a battery light on, it is usually due to an issue with one of the diodes inside the altenator. Replacement of the altenator would fix this concern. There is a diode trio inside that helps regulate the voltage and when one goes bad, it turns the lamp on.

Expert:  HDGENE replied 1 year ago.

Hello, do you need more help with this concern?

Customer: replied 1 year ago.
No thank you
Expert:  HDGENE replied 1 year ago.

Ok I f I was helpful please leave a positive rating, the question remains open until it is rated