Can i pick your brains please? 06 2.2 no start

[WBW2112]

Hello, I just found this forum online while I was trying to troubleshoot my car's problems. I would appreciate any assistance.

I have a 2006 Cobalt 2.2 L61. It was in a small wreck in the drivers front fender area. The car drove up onto a wrecker, and then drove out of the yard when i picked it up under it's own power. It was towed back home. When I went to repair the body, it would not start. The fuel pump would not come on. I put 12v to the pump after removing from the tank and it worked fine. There is continuity from relay to pump. Just to see if the car would run, I spliced the pump into a hot wire. It still wouldn't start.

I have pressure at the fuel rail (60ish psi) if it is spliced to a hot wire. Injectors will not pulse; The plugs are not wet. I verified this with a noid light. The injectors seem fine, though. They have fine resistance and will open if given power source. I had no engine lights so i had the ECM tested. It was determined it was flat dead. No signal could be run through it they said.

I just replaced the ECU and it still isn't running. Sour smell from exhaust when trying to start although fuel pump won't prime and spark plugs are not wet.

This was a good car and I would love to have it running again.
Any help would be appreciated.

Thanks,
Blake W.

[YelloEye]

If the fuel pump isn't priming it's not getting power, make sure the relay is plugged in correctly it fits in 2 spots that are side by side. Is the relay switching on? Does the relay have source power on the switched side?