We are seeing huge differences from Bank 1 to Bank 2 on a LS6. Car runs like crap and seems to be an electrical issue. Any ideas what could be going on here? O2 sensors are new but sure don't look right.
We are seeing huge differences from Bank 1 to Bank 2 on a LS6. Car runs like crap and seems to be an electrical issue. Any ideas what could be going on here? O2 sensors are new but sure don't look right.
I can't see the scan because my internet is being a punk....
But, a complete stab in the dark?
Is this a motor swap? Is it the correct computer/OS for that engine?
I only ask because I just went through extremely split BLMs due to a motor swap and the PCM wasn't true to the engine.
Custom PCM Tuning in Hollywood Ca
Not really now that I looked at the last log again they are both commanding a ton of fuel but we have gone both ways with the VE table with no better results. I've also scaled the injector table as a quick way to trim down fuel with no better results. It had a dead O2 sensor and so we replaced it, then the other was not responding and so we replaced it also.
Put it in OL, put a WB in each bank, and verify if it is an o2 issue or not.
What mods do you have? You really need to delete the worthless PIDs for a faster sample rate.
Sulski Performance Tuning
2000 WS6 M6 - LS6 (long block, refreshed top end), 10.8:1 CR, 90 mm ported FAST, Exo-Skel, 227/232 cam, QTP HVMC, EWP, GMMG, 9" w/4.11s
2018 Sierra SLT 5.3L A8 - Airaid intake tube, GM Borla catback, L86 Intake/Ported TB
which PID's are you talking about?
IAC position
Desired IAC position
TPS volts
FTC
Calculated cylinder air
Trans current gear
Commanded AFR (not doing much for you without a WB)
Sulski Performance Tuning
2000 WS6 M6 - LS6 (long block, refreshed top end), 10.8:1 CR, 90 mm ported FAST, Exo-Skel, 227/232 cam, QTP HVMC, EWP, GMMG, 9" w/4.11s
2018 Sierra SLT 5.3L A8 - Airaid intake tube, GM Borla catback, L86 Intake/Ported TB
I have a similar problem, but only about 1 on the stft, from 1 bank to another. stock lq4 motor. i read somewhere that you can use propane to find air leaks around injectors/ intake. watch your afr, and look for a jump when it sucks in the propane instead of ambient air. i have yet to try this on my truck, but hope to soon.
Ever find the problem ?
I'm having a similar issue after doing a new cam . But I also did a trans removal and hope I didn't mess up a sensor during removal-
I'm getting a large differance, as much as +25 on bank 1 and -26 on bank 2 at times .
Have you checked the wiring? The O2's are back there near the trans, perhaps you have the bank 1 and bank 2 O2 wires swapped?
Jason
1996 Camaro SS M6 - 24X conversion - stock bottom end - heads - shorty headers - 58mm TB
Ultradyne 230/238 .565/.565 112+4 - 30 LB red top SVO injectors - LOTS of suspension...
2002 GMC 2500 HD Duramax M6 - Just starting the tune on a stock motor now that I have a good clutch on order...
This^Have you checked the wiring? The O2's are back there near the trans, perhaps you have the bank 1 and bank 2 O2 wires swapped?
I just tuned a truck (65 chevy with a LY6 swap) and had this exact problem last week.