1992 jlx 4x4 02 sensor

[Dwayne]

This is a 4wd, 4 door, Automatic with overdrive. all electirc. I installed o2 sensor and engine seems to run much better but still very weak until warms up but idles and runs great otherwise. I cant really be sure the 02 sensor made the difference becasue i also change sparkplugs. 02 Relay may be bad. (where is it) the relay. I now need to set the choke as the engine does not idle up when it is cold. any idea's.