A million different reasons. But, one thing you can check that won't cost money is to check the rubber tube going from the airflow sensor to the throttle body. If it is cracked, air will be leaking, causing it to bypass the airflow meter, and making the engine die. If not, then it could be any number of things and you will have to take it to a shop and get it taken care of.
O2 sensor, if you have replaced it already, pull it out and make sure it hasn't burned it again. Jeeps can be notorious with these O2 sensors.
prob a vacume leak
More info will be needed to properly answer your question. There could be a multitude of reasons. Does your vehicle start at all? Does it stall while driving or idling?
30 seconds of idling equals one average start, on a normally-functioning start.
are you sure its fuel cut out? my probe would not start traced problem to electronics inside distributor had failed [common fault on probe]
Maybe a throttle positioning sensor? Is it hard to start? Does it start then stall?
If the oil is low in your car, it can eventually cause your car to stall and not start. It can also kill your engine.
how does it stall if it wont start?
Sure it still has gas?
my 97 ford probe GT does not start sorry for the mistakes