Having trouble with idle after warm up.Removed all smog related items and installed new heated O2 sensor.Really smells like it is running rich.Idles fine on cold start but still smells rich.After about 4-5 minutes idles down but real rough especially in gear.Please Help.Please sen any suggestions to sojourner@frontier.com.Thank You.Also forgot this is on a 1992 Firebird,305TBI.

 

Is it entering closed loop?

 

Not sure Ronny but o.sebastian33 is burning me a new chip and another friend is going to rebuild my throttle body.Going to try these fixes first but thank you for your reply.