BT SNAKE Hersh I know something about GM and FAST ECU's I don't have alot of info on Ford units. From your problem said it a shorted out ECU. The problem is finding out WHAT COOKED this one so not to smoke another one. You had alot of starter problems, may have killed the battery enough to internally damage the quad drivers in the box. The first thing I would check is the grounds and battery supply to the ECU. If you have any doubt, install new wires. As for the AC compressor coming on and killing the car, there should be a 40amp relay to power up the clutch. NO direst connection between clutch and ECU, even on the ground side, IMO. Does the car have a data link to checkout the ECU?? Think I would start there first and see what is causing the blinking. Power connection can cause the same thing. Some ECU's have a default mode or limp mode to keep car running and get you off road or to local dealership for repair. After you get new ECU. and do
oil change, when you start car, get fuel pressure built up and unhook fuel pump or turn off. This way you should have about 10-15 second before motor cuts out. If everything is OK, turn pump back on. We don't want to wash down the motor again. Sparying
oil into each splark plug hole and crank motor wouldn't be a bad idea either. Good Luck. Check wiring good.