I have a 1991 Oldsmobile Cutlass Ciera the car starts right up then dies immediately, it has 41 lbs at the fuel rail and obvious spark. it shows no trouble codes on the scan tool but shows communication with the ecm, and the crank position sensor seems to test ok

The ECM on this car will shut down the injector driver circuit if one of the six injectors has a coil out of tolerance. (Shorted coil or resistance out of parameters) Quick check. Unplug two wire cap to injector one at a time. (hold/push wire clip inwards then gently wiggle/lift cap off---careful with wires) With one unplugged try starting. If no start- plug back and use same procedure on next injector and so on.........In most cases if bad injector coil the engine will start when it is located. Replace injector. Some say the ECM shuts dirver circuit down to prevent further damage to switching circuit.