Hey everyone. A couple months ago I purchased a 1990 lx convertible with no engine, trans, or ecm. It came from the factory with an automatic transmission but it was converted to a stick. The previous owners removed the engine, trans, and ecm to put in a different car. I'm in the process of putting it back together. I found a stock 5.0 out of a 92 foxbody, and a t5 to put back in the car. Before I put the engine and trans in, I installed a Ford racing e303 cam, New lifters, comp cams 1.7 rockers, GT40P heads off a mountaineer, GT40 intake, aeromotive adjustable fuel pressure regulator, BBK fuel rail, accel 19lb injectors, and trick flow valve springs. I also got an A9P computer (which is what was in the car before I bought it). I have the engine and transmission in the car along with the ECM. When I go to fire the car up, it'll start, then die a second or 2 later. I'm completely baffled why this thing won't stay running. I've checked to make sure the distributor is in correctly, I've tried another ECM, checked the rockers multiple times, fuel pressure is at 45 psi with no vacuum. When I installed the cam, I lined the crank and cam up dot to dot. Now just to give as much info as possible, the belt drive setup is not installed (alternator, ac compressor, water pump steering pump), i also do not have the exhaust hooked up. So no,, the 02 sensors are not connected. When the distributor it turned all the way to where the ignition module hits the waterneck, the car will fire right up and die within a second or 2. When it's turned the opposite way, it won't fire at all and sounds like the exhaust is under water. I'm completely lost as to why this thing won't stay running. If anyone has any ideas, please let me know. I'm beyond frustrated with this thing.