My car starts up, runs, then dies. Please help

[Onos]

no its not

[1999GrandPrix]

hey onos, hey does ur car have problems at cold start in the mornings? is it just actin up when engine is warm? had the same prob. turned out to be a maf sensor.

[1999GrandPrix]

if ur maf had no effect when unplugging, it would make sense because ur maf is prolly dead to the point where the car is already in "safe mode" as if it was unplugged anyway. just try disconnecting maf and remove battery cables for like 15 min to clear all codes if any. then leave maf unplugged and connect battery and try to start let us know...