'81 pickup, 22R. Alternator light stays all the time, and even after engine warms up, it still idles too fast. Alternator has about 3 years and 3,000 miles (not a typo, I don't drive the truck much anymore) on it. I haven't been able to determine if battery is being charged. Can someone explain what's going on here? Also, is it possible that the alternator is charging the battery, but whatever connection there is between the alternator and the fast idle is faulty?
Thanks