Hi, I'am working on a project if mine. I took the engine out of my sunfire along with the wiring harness as best I could. Now I'am trying to get the engine running however it only runs a couple of seconds and dies right away due to shutting down the injectors. I've taken my ecm to a Guy who said he could reprogram it to have no anti theft system, but still the problem is still preset. I don't know what else I can do. I've pluged a diognostic tool in and I states no stored faults.