ok, i am retired 25 yr master mechanic. There is a long list of what I call "Trial and Error", things to do.
First thing, even though you may have fuel pressure.. it may not be enough. also, injectors need "X" amount of volts to even open. (X= volts per vehicle) dodge is about 30psi at fuel rail, primed for starting
So, let try a few simple tests... first, kick the gas tank!!!.. kick and kick.... then try to start it... if it starts, your fuel pump is hanging up, most likely the bearing.
Second, Unplug the "up draft" o2 sensor " this is the one in front of the cat"..."nearest the engine". If it starts... replace both o2 sensors, also....this will put the computer into a default mode, by-passing everything. If it is capable of running at all...it will now.
If, not, the problem is external, meaning, not sensor related. So, what is left...Fuel pump, spark, air.
ok fuel first, best way to solve if it is a relay, swap relays, in the fuse box on DS wheel well. Switch any relay you know works, such as fan relay, or A/C relay. If everything else, check out... air and spark.... fuel pump is hit bro. replace it.
spark, remove plug wire, and use old plug, in wire, on block... crank, and watch for spark. or get one of those fancy inline spark testers, for $5.oo...lol No spark? needs coil. hangs off front passenger side of block.
Air... remove filter...done Simplest way for a basic driveway troubleshoot. also, turn key on/off/on/off/on.......this will bring up codes onto the milage display. so, pay attention, it goes quick.
Best I can do for now, until, i hear word from you guys...
P.S. I work for Ohio Technical College...I can bring this question up the line if needed.