Hello everyone!
Swapped a LM7/4L60 from 2004 express to my 92 camaro.
Now. Everything related to rear 02-s, evap, have set to "No error reported". Also unchecked the "Ses enable" box.
Thing is that Oxygen sensor showing still incomplete. Also feels like im using a lot of fuel and looks like a lack of performance...
Any suggestions?
The readiness tests doesn't need to show complete for the o2 sensors to function.
Does the computer still go into closed loop fuel control?
What are you fuel trims doing? What is your fuel pressure?
Post the tune and logs of the issue, that is the only way for us to see what you see.
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.
and just fwiw you dont need closed loop or narrowband oxygen sensors.
If you tune the engine properly using a wideband it will run far superior than using closed loop to control the fueling, closed loop swings the a/f ratio past 14.6 -> 14.8
and those a/f ratios are neither ideal nor desirable for idle/cruise. Most engines will yield best economy from 14.9 to 15.2 a/f ratio sometimes 15.5
And for a healthy cam lope usually the same a/f is ideal 14.8-15.2
in 20 years of tuning my own vehicles I've never used a narrowband closed loop control , ever
Leave O2 codes No Error Reported but re check the SES Enabled box. That might let the readiness test show complete. No guarantee but something to try.
It have been a long time since the post. Replaced fuel pump, now having constant 58-60psi pressure. And figured out, after about 70miles of constant driving, O2 sensor is now showing complete. When cruising at 60mph on highway, arverage is 30MPG. Tested it with full tank-gallons method.
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