Why is my truck having trouble starting after i replaced alternator?

Asked by Jul 07, 2017 at 09:36 AM about the 2002 Ford Ranger 4 Dr XLT FX4 4WD Extended Cab SB

Question type: Maintenance & Repair

About a week ago i was driving on the freeway headed home from a concert.
The drive from home to the venue was about 40 minutes & my truck made it
completely fine. On the drive home about 10 minutes after i started the
vehicle my radio screen started flashing like crazy, when i looked at my
gauges the battery gauge was gradually lowering, i was able to drive a few
miles after all that happened (im guessing the truck was just running off the
remaining power in the actual battery) but eventually i lost all power, lost
power steering, headlights turned off & I had to pull off the road. now on one
of my terminals was quite corroded, & when i cleaned the terminal i noticed a
small small crack very close to the terminal. I had the truck towed & i started
trying to diagnose the problem. made sure the terminals were clean in case
the problem was a bad connection but it wasnt that, i jumped my truck to
start & when i removed the jumper cables the truck would turn off soon after.
I then charged it longer & removed one of the connectors to see whether it
would stay on for a little longer after it was removed, which it didnt so i came
to the conclusion that it was my alternator. I replaced the part & it fixed the
problem. my truck runs now but when i try starting it, it makes a clicking
sound like the battery is dead, but it will turn over after a few clicks. What
could possibly be going on?

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