[Travis18]

I have a 1993 Buick Regal GS. My check engine light comes on from time to time. I pulled the code and it said it was the o2 sensor. I replaced it and it still does it. The light only comes on when the rpm's are at the same speed for a extended period of time ie: cruse control or highway. As soon as I hit the gas hard or even brake it will go away. Any suggestions would be good