Alternator Charging issue
I have 2001 Ford F-150, 5.4L, 2wd. While
out running errands I stopped and locked
my truck. I noticed that the hoed was weak
and the headlights where deem. I opened
the door and I hear the "clicking" noise like
when a battery is not charged up. So I got
it jumped off. After about 30 seconds it
died. So, I assumed the alternator was
going out. I took it to the auto parts store
and had it test and then to a different store
to double check. Both said it checked
good so, I put a hot battery in and
reinstalled the alternator. After just a
minute or so, the voltage started dropping
and final back down to where the truck
died. It sure has the symptoms of a faulty
alternator but it checks good. Please
advise if possible.