98 Ram stalled and will not start. First I checked the fuses in the fuse block under the hood. It ran for 3 seconds and hasn't since. I first changed the Crank position sensor, no start. I tested the fuel pump, 45 PSI but dropped to 0 in 2 minutes. I swapped it out with a new one. Pressure is 48 and stays there.

My battery is fully charged and I changed the cap,rotor, wires and plugs a month ago. I also changed the coil. There is good gas in the tank. Lawn mower runs on the gas I put in.

I am at my wits end and I can not seem to figure it out. Anything else I can check? Only thing else I can think of is the PCM.