2001 Saturn SL2 engine

First of all thank u so much for ur donation it really helps to keep this site going and answering everyones questions. So when it starts and dies does it always do this or only when cold or hot?Do u have any codes?If u hold ur foot to the floor while trying to start it will it start and clear out itself or run better?Let me know.

When u turn ur key on where does ur temp gauge read all the way to cold or somewhere else?Also have u tried spraying carb spray in ur throttle body to see if it starts any better?When it starts and dies about how does it run?

ok if it runs for 3-4 seconds i would say it has spark.we dont know how much fuel pressure it has though it might be too low to keep running.also u could have a bad coolant temp sensor very common for these cars will cause no starts dieing surging unstable idleover heating.its figure 6 on the diagram i posted.if u had a scanner that could read engine data u could read engine temp and see if it was within 10 degrees of actual temp.the sensors are only like 10 and easy to change they just screw into the head.they also leak and corrod the the connector if urs is corroded then u will have to replace the connector.if u could get a scanner that would read engine temp that would be great then u could see if it read within 10 degrees of the actual coolant temp of the coolant bottle temp.if not u could try changing the sensor.if u change the sensor becarefull u will loose coolant.also make sure u replace it with a brass tipped one not a plastic tipped they crack and leak into the connector.if all that is good i would check ur fuel pressure next.let me know what u find.

Sounds like u have no fuel pressure now.A fuel pressure gauge is only like 20-25 we need to see how much fuel pressure u have. Sounds like thats where were at finding out if u have any fuel pressure then we can trace down power and ground. Let me know if u have fuel pressure.