Hey guys i have a problem with my 2000 toyota le as i was driving on the high way my car stoped to increase speed i pull over and the car died. when i check the engine i found loose belt that connect to the alternator. i tide it back than i tried to start it but it doesnt start i had the bettry alternator checked its all fine now i dont know what the problem is?

Hi,
Now a days, various parts of cars are more of electric powered. The alternator, that produces electricity for the parts in the car and charges the battery for starting,
When the belt broke loose from the alternator, it stop producing electric current for the the system, thus it drained your battery and stop the car from running.
The problem is the alternator bracket that have loosen and dislodge the belt, it happened when somebody did not tighten the bolts and nuts on the bracket.

Hope that helps you out.
Thanks for asking FixYa!