[handsomdevil00]

I just replaced my fuel pump. the car is all screwed up now. i started the car and 4000rmps is what i say. then 4 seconds later it starts to idle up and down between 4000 and 1000. oh my god what is going on. do i need a new ecu. i looked before i replaced the pump and no lights come on. should i get a new one?