I recently bought a 1995 nissan pickup truck it is a lowrider and plan on fixing it into a really nice ride but i have a problem  the idling is very rough it was running fine then the engine light came on and i put an o2 sensor in changed a fuse and the light is off but now when i come to a stop it wants to quit if I take my foot off of the gas and I was just wondering if you have any suggestions for me.  Please help!!!!!!!!  

ck the I.A.C or Idle Air Control or ajst Idle screw on carb.