I swapped out my ECM, too. Ran for 1/2 hour then I shut it down. Waited 15 minutes and it wouldn't start. Again, cranks great but NO gas at the injectors and NO spark at the coil wire!!! A couple of days ago I took the ignition module in and they tested it and tested it. It never failed. I'm gonna start checking with the Magic 8 Ball or the Ouija board soon!!!!!!!