This is fairly common except for the fuel gauge, so lets start with the basics. I'll have to come back and explain how the system works, but in the meantime, find the dark green/orange wire at the ignition coil or at any injector. Measure the voltage there with a test light by back-probing the connector through the rubber seal. You should see the test light turn on for one second when you turn on the ignition switch. You should also hear the fuel pump hum for that one second
What is important is that 12 volts must come back during engine rotation, (cranking or running). If it doesn't, the Engine Computer is not getting a signal from the camshaft position sensor or the crankshaft position sensor. Given the transmission work, the crank sensor is the better suspect, especially if it wasn't removed before removing the transmission.
Let me know what you find.
Sunday, April 14th, 2019 AT 8:15 PM