I own a 1994 dodge caravan with a 3.0 under the hood and it has a stalling problem started instantly when driving at 55mph it died then I can start it and go 200-300 feet and dies some times go 15 minutes and it dies I thought was the cap and wires so I changed it air filter and plugs are new too so I am leaning towards the fuel pump can it be that or something else I never ownd a dodge before

Consider replacing the ignition control module. Perhaps the coil is breaking down internally and also needs replaced.

Replace the Ignition Control Module (ICM) and coil--classic problem. At AutoZone the ICM (CR128) costs and the coil (C872) costs $41.99.

Electric fuel pumps are extremely reliable. Your problem is definitely ignition system related.