My f350 has had the alternator replaced and batteries replaced truck still only runs for a short amount of time. Took the alternator off and retested and it was bad, the batteries tested good.Put the new alternator on and started the truck for a few minutes. The next day not enough power to start took the batteries in to get recharged they both came back bad. What can be causing this problem. Ford f350 2005 super duty 4 wheel drive 6.0L
What brand, BCI size and cold cranking amps are the batteries? Who or how did you get the batteries tested?
cold cranking amps 850 batteries were tested at O Rielly's once before the new alternator was put on an then after.
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