ok so came down to AZ for baretjacson on the way down the van (89 dodge b250 camper van 318 overdrive ) stars bucking at the base of the grape vine bye the time we wear at the rest stop she was barley running spent the night bye passed the fuel filter no change limped 3/4 of a mile to the next exit found a shop they test drove it and all vas fine so replaced the fuel filter and was fine tell we went to leave Scottsdale starts acting up long store short iv replaced cap rotter plug weirs tps coil air filter auto shut down relay and cut off the cat so now its at the ford/dodge dealer hear in Wickenburg
so ideas what's wrong thanks