My 01 ST crapped out on my wife while I was away last week.
Turns out it's the alternator.
I searched for posts on alternator and found out there are 4 different part numbers.
4 Dr, Sport Trac, (130 amp), ID 4G7U-10300-AA
4 Dr, Sport Trac, (130 amp), ID XL2U-10300-AA
4...