[wiswind]

I don't know what to suggest.
You say that it now starts but does not stay running?
I would say to narrow down whether it is an ignition problem, or a fuel problem.
To see if it is a fuel problem......you can connect a fuel pressure gauge to the front, middle of the fuel rail.
If the fuel pressure comes up, then drops down, then it is a fuel delivery problem......and the first (easiest and cheapest) thing to check would be the fuel filter. After that, the fuel pump.....or fuel pump relay, or fuel pump wiring.

Does it help to have the accelerator pushed down up to 1/4 of the way?......if so.....the IAC (Idle Air Control) might be stuck closed.

If ignition, is the power staying to the system when you go from "start" to "run".