Not sure if the '92 Lumina has an inertia switch or not. The inertia switch (also called fuel shut-off switch) will trip in an accident and shut off the electrical power to the fuel pump. You might want to check your owner's manual to see if there is one and where it is located. Also to learn how to reset it.
your knock sensor could need to be replaced
My 94 Lumina APV (3.8L) would not start (when warm) - cranked but acted as if no spark or fuel. Mechanic replaced computer @ $350 (said too many error codes to diagnose problem) - did not resolve problem. Then he replaced the camshaft position sensor (CMP) @ $125 - that solved the problem. PB
Either a O2 socket & ratchet or a 22mm wrench. Best find out which sensor first as you could spend lots of money guessing
When the thermostat and radiator were replaced, coolant could have dripped into an electrical connector or a sensor could be disconnected or damaged. Check the temperature sensor and crankshaft sensors first.
COULD BE THE CRANK POSITION SENSOR
Code 45---Rich exhaust--- Check the evaporative charcoal canister and its components for the presence of fuel
The new sensor could be stuck. Or the wiring could be loose, or the coolant could actually be low. Check the coolant level and the sensor wiring first.
Could be the knock sensor.
Could be the Throttle Positioning Sensor or the Idle Air Control Valve
I have a 92 lumina euro that did that and it turned out to be my crank sensor. The problem could also be the Torque Converter Clutch, bad plugs and wires, distributer cab, low idle could cause this to.
I had to go to a dealership in order to find the location of the cam position sensor on a 1993 / 3.1 chevy lumina. I could order the part but was unable to find the location. after returning from the dealership. I am here to discredit those who say it doesn't have one. it in FACT does have one!. It is located under neath the intake plenum..
Have you replaced the cam and/or crank sensor?