new fuel pump went out after just two days

dirt and debris are very common for fuel pump failure. even though your car is not too old, you may have picked up something when you were fueling. a word of advice. never get gas when the big truck is re fueling the station as that process stirs up all the dirt and gets it in the lines. Roy

Are you sure that the fuel pump relay is good? Did you powered up the pump from an external power source to see if it's working? Unfortunately there are more and more bad quality parts on the market, and that includes OE parts also. Looks like all manufacturers try to save $$ on parts and they are lowering the quality requirements. Zee

Have you had a diagnostic test performed? These cars will not run sometimes if the ETB (electronic throttle body) has failed. Any codes? Can't even remember ever replacing a pump in a Five Hundred...