[BleedDodge]

What I think happened is that it's only misfiring at some times because when the tank was dirty in 2001 or whenever, some sand or other kind of dirt got into an injector, or injectors, and misfires. If the tank is full you probably have enough pressure in the lines I guess to make it run like it's supposed to, but as soon as that pressure drops enough, it won't run right anymore. I think this is what the cause is because one of my friends has a '96 318 Ram Sport and his truck started acting up only after he replaced the sending unit for the fuel gauge because it didn't work. After that, the gauge worked but some dirt or something must have gotten into a place where it shouldn't have been, because it messed up a few of the injectors which caused it to misfire.

I'd do the injectors, and check the spark plug wire routing against a diagram, because the motor can do wacky things if the routing is incorrect.