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Old 1 Week Ago   #1
scorp508
 
Join Date: Jan 2024
Location: Boston, MA
Posts: 69
Question O2 cross counts. How close should they be?

I received an ALDL -> USB cable today and was getting everything going in TunerPro RT with my '94. Thanks again, Jeff, for the ADX file.

Just idling in the driveway, I noticed my O2 cross count values were wildly different from bank to bank. Is this ok when not actually out driving?

My left O2 cross counts were going up roughly 2X the right O2 cross counts and the mv readings on the right were definitely more sluggish than the left.

For example...

L128/R72 then a couple mins later...
L107 (rolled over back to 0) / R220.

Right/Left BLMs were both sitting at 128, but learn control was still off in closed loop. I haven't yet learned when learn control kicks in.

Left integrator was hanging around 136-138.
Right integrator was hanging around 128-132.


I'm wondering if I may have a lazy O2 sensor in there or if this is normal.

Thanks in advance.
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1987: Z51 Coupe, Z51, 4+3, Yellow / Graphite
1994: ZR-1 #150, Admiral Blue / Black
2015: Z06 Coupe, Z07, M7, Arctic White / Red
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