I have a 96 ford ranger 4-cylinder. I've been messing around with it trying to get it to fire, but i'm stumped. The alternator took a shit, so I replaced the alternator, bought a new batter, serpentine belt, and even battery terminal clamps!

Now its turning over like the motor is seized up. It turns over like the battery is dead, but its not that.

So i thought maybe one of the accessories that runs off the serpintine belt was locked up, so i took off the belt and tried turning it over, and it struggles to turn over.

I'm starting to think that this trucks last leg finally gave out. What do you guys think?