What would cause my 2002 suzuki esteem to just die

Jamie, Is or was engine light on, are there any codes, was there any recent work done? The more info. the easier to help diagnose.
Removing the oil fill cap and have a helper crank the engine, while you look for cam movement,if you have cam movement that's good.
Next squirt some starter fluid in throttle body and try starting, try a couple times. If starts and revs fine while running on starter fluid, problem is a faulty fuel pump filter,fuse, relay or pump.
If it spits sputters or backfire while trying to start, timing belt has slipped probably and needs replaced.
See links below for more reasons,
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Lots of reasons, i can list over 50 ,
are you asking how to guess,?
or how to do 1 to 10 test and find the truth.
do say?

esteem G16b engine. (single belt cam)
or
Esteem J18 engine (twin cam, chain cam)
the 2 engines, are apples and oranges different.

lost all power,
engine power, i can guess
but did it lose all electrical power too, like dash and headlights go dead.

so it wont start ! got that...
but does it crank, we need to know if it cranks or the starter is silent.????

lacking these facts id be a fool to guess.


here watch scotty and learn

https://www.youtube.com/watch?v=064Ilsz8Fzg&NR=1&feature=fvwp

how far do you get , with mr. scotty.????????

Check for defective timing belt if equiped

Crank Shaft sensor has failed timing belt is broken etc.