TwinTurbo.NET: Nissan 300ZX forum - I would say you have a problem....
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Subject I would say you have a problem....
     
Posted by zx299 on January 02, 2010 at 7:06 PM
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In Reply To Anyone care to give me a good answer to my Q in the last... posted by kickerzx on January 02, 2010 at 12:45 PM
     
Message "Why tha h... does the mixture/o2 sensors fluxate when ideling?? That makes no sense to me." (kickerzx )

Your mixture should NOT vary at idle because you are running in open loop (it will change if A/C is on but will not fluctuate)

Your O2 sensor readings shouldn't fluctuate because you are running in open loop at idle and the O2's are being ignored by the ecu. Your O2 readings should only start to fluctuate at 2000rpm.

It sounds like you may have a vacuum leak or a fuel problem that is causing your idle to "hunt".

"If you own a 300zx, you don't have time for a hobby"
"If you own more than one 300zx, you don't have time for a life"

     
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