Truck want start

2003 Dodge Dakota 4.7: Truck started fine one day, and then would not start next. I checked multiple things before taking to shop. They hooked up to genie, and it checked all sensors as being okay. The engine turns, plenty power, new plugs and wires, all sensors showing okay, fuel gets to spark plugs, there is a thing going into injectors like on a tire to check fuel pressure, and it shoots gas out just fine. Gets fuel, gets spark, turns strong, but want crank. Any ideas, because shop is even scratching their heads. Dodge place said it was probably bad chip in key, but we tried spare key and no luck.