I was driving 70 down freeway, started to slow down, could not accelerate because it seemed to bog pulled over and vehicle died. Could not get it to stay running. It starts and runs for a few seconds and dies. Seems to be starving for fuel, but pump is working correctly and right pressure. I am lost as to what else it could be. I pulled the air filter and sprayed with carb cleaner and it would stay running so I know spark is good. Any ideas?