2003 Mazda Tribute Q&A

2003 Mazda Tribute Question: Why does my vehicle idle rough after cold start but runs great when engine hot

Every morning when the engine is cold and when the engine warms up for the day it runs great -
Answer 1
do you have a ck eng light on? -
Comment 1
Yes the check engine light was on but then i replaced all the oxygen sensors as one mechanic checked with the OB2 reader and now the lights are off but my vehicle still does the same when i start in the morning time until it get hot -
Comment 2
what were the codes and fuel trim readings? -