Still trying to sort out my running rich issue. Today I unplugged my o2 sensor to see if it would do anything. Only thing is I got no cel/code for it at all. But when I replaced my header a while back I went with out the o2 for a day or 2. And got a cel/code the ECU is also giving me a solid cel but only when the car is on. Car is a 94 GSR w/I,H,E,IM,TB,Chipped ECU.

 

is the o2 disabled in the map?

 

Will check that out but I don't think so

 

The O2 code might not trip until the car is warmed up and tries to switch to open loop. How long did you run it without the O2 sensor plugged in?

 

Let it idle for a minute or so. But last time as soon as I started it it threw the code will try and let it idle longer this time. can't drive the car as it's stored for the winter.

 

You'll be open loop the entire time you're idling. The only way to get into closed loop is to drive around a bit, with the engine at operating temp.

 

Does anyone know how code 0 is shown(bad ECU/ECM) would really help me out.