89 ford bronco stalling?

Ok so here as of late my truck has been stalling. we replaced the battery thinking it was that, then a few days later while i was sitting at a stop light the truck up and stalls again and dies with no choke or warning no battery light or engine light. After it dies it takes me several minuets to get it back on and running and then the rest of the day it runs fine and then rarely dies again. I do have a code scanner for the truck so i can get codes and i ended up getting an 14 and 18 and then 34 so any other ideas what might be going on with my truck. also i know the fuel pump isn't getting cut off, becuase its turning over then not catching, then just got this info from my dad saying the c.v.p. valve was replaced about 2 years ago then the t.p.s. was replaced 3 or 4 year ago and the ignition module hasn't been touched so im in need of major help here any ideas whats going on?