1999 ford explorer

i have a 99 ford explorer with win code 4.0 i got a code po174, i put a new o2 sensor in bank 2 and cleared the code four days later the vehicle wound't start. this was on cold days other days it just wont idle. the following day it started and came back with codes po174 and po171. i have 60 psi so i dont think it would be the fuel pump can anyone help me:banghead:

Welcome to the forum!

Have you searched the forum for codes P0171 and P0174? These are pretty common codes and they have been addressed a few times here before. Try the "Search this forum" tool from the Explorer forum main page.

By the way, it's P[zero]171 and P[zero]174. Making sure to use a zero may help with the search.

-Rod