Need Early Stage Diagnostic Help. Car starts and runs rough...

[RockyTop]

Now that the weather in Atlanta is cooling down (to a whopping 75 degrees today !), I have noticed my car has started running rougher at start up, with the idle often sticking between 2000-2500 until (i) the car warms abit, or (ii) I bump the throttle a few times. I also notice that the car bucks when gently applying the gas in these early runnning moments. Finally, it seems that my Air/Fuel gauge connected to the Rowe VEC gizmo is not cycling down to the fully lean area as often as it used to and for a short while after starting, the mix (or at least the LED readout thereof) sticks at a single orange, or leanish, reading instead of constantly cyling up and down the meter as it used to.

I am not getting any engine lights and the dealer does not get any codes on the DRB. One guy here thought it might be the mass airflow sensor (?) or an O2 sensor going bad. Your thoughts ?

 

[RockyTop]

Solved. The engine light went off and the codeit gave was O2 sensor. No doubt my SVS headers and exhaust burned another one ! I have routed and rerouted the harnesses and still....