96 intreped stalling

hey guys my parents have a 96 intreped that first the ac compressor locked up so i fixed that. also the cooling fans fuse blew so the car heated up a little. when this car heated up we did not run the car we let it cool down but now the car ever since this happened it stated stalling a few weeks later. any suggestions on where to start to look thanks

When it stalls is it a lack of fuel or spark ?

unfortunitely i am trying to help out from out of town so i dont have the car with me to check fire and all others. i guess its kinda hard to do things without the hands on. if they dont get it fixed i am thinking of changing out the o2 sensor and the cam and crank pos sensors and maybe the ignitioin. i can do these things easy and i hear these are the things that usually go bad on these lovely cars.. any other suggestions let me know thanks

Test don't guess.