hesitation and 02 code

i have a 95 grand am 2.3 it hesitates and keeps throwing a 02 sensor circuit code replaced 02 sensor and replaced cat due to it was hollow still having the same problem any help would be great

the problem could be in wiring from O2 sensor connector to pcm. Maybe open or intermittent short/open?

what code you get?

i have a 95 grand am 2.3 it hesitates and keeps throwing a 02 sensor circuit code replaced 02 sensor and replaced cat due to it was hollow still having the same problem any help would be great

I am having the same exact problem with my 96 2.4 and did the same thing. Did you ever find a resolve for this?