donquijote
Active member
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I put in a new Delco 21si alternator in one of my 6.2 M998's and it's been running fine for 5 months. Then last night I noticed the headlights were very low, and i looked at the voltage gauge and it was all the way to the left (red). Went straight home and took a reading with my voltmeter. The batteries are new Optima Marine Blue Tops that are 3 weeks old.
Truck Running
Alternator - 14.52v
Both Batteries - 14.35v
Turned Truck Off - I tested both batteries individually
Left Battery = 48v and finally settled to 10.42v after a couple min
Front Battery = 5.25v
Is the alternator causing the problem i imagine? Could it be going bad already?
Thanks.
Truck Running
Alternator - 14.52v
Both Batteries - 14.35v
Turned Truck Off - I tested both batteries individually
Left Battery = 48v and finally settled to 10.42v after a couple min
Front Battery = 5.25v
Is the alternator causing the problem i imagine? Could it be going bad already?
Thanks.