Ok, so, I admit I'm a moron for crashing my car. But after all the bodywork I drove the car to a gas station since it was TOTALLY empty. She dies at the pump and then after I fill it up she starts blowing thick black smoke and running rich.
Well then I try driving it to a mechanic but it's not even moving 2ft! Well I towed it to the mechanic and he replaced the O2 sensors and it runs almost perfect... In park. As soon as he shifts in drive and gives it gas the engine dies. If he floors it it'll die even in park. Well after he replaced the O2 sensors he cleared all the codes and the code for the ECU is the only one showing up. And I even drove it for about a half hour and she ran rich but strong for about a half hour before it started doing all that misbehaving. But here's the weird part: it overheated after I left it idling at the mechanic's shop and dumped a bunch of coolant. Could an ECU be making the engine do all that?