I have a 2000 GMC Sierra cammed 6.0 with tbss injectors. Truck goes rich/lean while driving and in idling . ** See the attachment LOG file . ITS DRIVE ME CRAZY
I have a 2000 GMC Sierra cammed 6.0 with tbss injectors. Truck goes rich/lean while driving and in idling . ** See the attachment LOG file . ITS DRIVE ME CRAZY
You mean your o2 sensor are switching back and forth like normal??
2016 Silverado CCSB 5.3/6L80e, not as slow but still heavy.
If you don't post your tune and logs when you have questions you aren't helping yourself.
yes and according to my afr too it goes rich and lean while idling and rolling. I tried to adjust the VE airflow still the same problem any help!!
That's how they work. Narrowband o2 sensors switch lean and rich of stoich at all times when not in performance enrichment.
The wideband is going to show it swinging between 13.9-15.2ish or so on the gauge.
So really, you don't have any problems because they all do this.
2016 Silverado CCSB 5.3/6L80e, not as slow but still heavy.
If you don't post your tune and logs when you have questions you aren't helping yourself.
They are supposed to switch like that. Stock O2 sensors are only good at telling the ECM whether you're rich or you're lean.. they can't really tell by how much, so they constantly bounce a little rich and a little lean.
Depending on ECM/OS/generation there are some O2 error tables you can reduce that will reduce how much it adds/subtracts, effectively making the swings smaller.
Under engine-->fuel-->open closed loop, "closed loop proportional" section, "O2 error" table. Not all OS's have access to this table and I have no idea if a 2000 does but that is something to look into at least.
Post a log and tune if you want help
VCM Suite V3+ GETTING STARTED THREADS / HOW TO's
Tuner by night
CPX Tuning
2005 Corvette, M6
ECS 1500 Supercharger
AlkyControl Meth, Monster LT1-S Twin, NT05R's
ID1000's, 220/240, .598/.598, 118 from Cam Motion
2007 Escalade, A6
Stock
These arent very high values. About how much do you recommend reducing them by?
I think that may be the wrong one (my bad). Check out the one labeled "Airflow Mode" and see what it looks like (if you have that one)
Post a log and tune if you want help
VCM Suite V3+ GETTING STARTED THREADS / HOW TO's
Tuner by night
CPX Tuning
2005 Corvette, M6
ECS 1500 Supercharger
AlkyControl Meth, Monster LT1-S Twin, NT05R's
ID1000's, 220/240, .598/.598, 118 from Cam Motion
2007 Escalade, A6
Stock
Very similar. What kind of reduction can I get away with?
Try reducing 20% and see what happens. Not sure it will make much difference but I guess we'll see what happens
No change. At least none that I can see.