At what point is the O2 used for fuel compensation (IE. heated vs non heated)

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Sep 11, 2002 | 10:04 PM
  #1  
IF you use a heated sensor will the ECM use this input when it is available or is there other parameters?

When I unhook my O2 the engine idle reall hunts ... 500-1000. I figured it would just go into open loop and run rich.

Does that sound right? Or do I have some fuel problems? (I've checked all the mechanical devices that can effect my idle: IAC, MAF, spark, fuel pressure, vac, etc.)


Mark.
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