Slow crank like it almost won't go. Battery tests fine so far. Letting it sit two hours. 12.6 now. Up to 13.8 when running. What else? Have some occasional belt noise when air or heat on. But belt turning and no noise right now. TIA

 

did you load test the battery and how old is the battery?

 

It's old. Too old to read. Before me. It dropped to 12v in a half hour of sitting. Battery?

 

Probably.