I don't know where you stay but check your Cold Start Injector. Mine was plugged and would not deliver fuel. The engine would catch and run for 10-15 seconds and die. You pull the fuel line loose and the two socket head screws that hold the injector in place. Pull the injector, loosen the FD end of the injector pipeline, and pull the line up so it can be connected to the injector. Jump out your fuel pump. Have someone turn the ignition on and see if the injector delivers fuel.

I'm in North Central Florida and yes, the cold start injector we needed to get a reliable start, even at 75 deg. F.