06-17-2022, 05:38 PM | #1 |
Drives: 17 Camaro SS Join Date: Jun 2021
Location: Oxford Mississippi
Posts: 9
|
Car running lean while idling/cruising
I was wondering if anyone else was having lean idling after adding a upgraded torque converter. Also it might be my oxygen sensors but no engine light is getting thrown. Any ideas?
__________________
----------------------------
17 camaro ss MSD Intake 2" headers NGK iridium spark plugs ---------------------------- |
06-17-2022, 05:53 PM | #2 |
Account Suspended
Drives: 21 ZL1 Join Date: Feb 2022
Location: South East
Posts: 662
|
Yeah i'd replace the 02's. Your one bank is just a tad lean and the other is super rich. The car is doing what its supposed to in order to keep stoich, but its way out of wack. I'd maybe start with unplugging the battery and letting the fuel trims and adaptives reset.
|
06-18-2022, 09:17 PM | #3 |
Drives: 17 Camaro SS Join Date: Jun 2021
Location: Oxford Mississippi
Posts: 9
|
Cool I will do that
__________________
----------------------------
17 camaro ss MSD Intake 2" headers NGK iridium spark plugs ---------------------------- |
06-29-2022, 12:58 AM | #4 |
Drives: 22 ZL1 1LE A10 Join Date: Feb 2022
Location: Ohio
Posts: 233
|
cant see the logs, whats lean?
|
07-12-2022, 05:55 PM | #5 |
Drives: 17 Camaro SS Join Date: Jun 2021
Location: Oxford Mississippi
Posts: 9
|
Alright i ended up changing the 02 sensors but that did not fix my problem.. I also have a log from a cold start to warming up and it seemed to do good until it came to the point of idling.. I think i may have an increase in airflow at idle because of the higher torque converter being a 2800-3600 vs the stock one.. is there anywhere I can add gas at idle?
__________________
----------------------------
17 camaro ss MSD Intake 2" headers NGK iridium spark plugs ---------------------------- |
07-12-2022, 07:55 PM | #6 | |
Drives: 2021 LT1 10 speed auto Join Date: May 2013
Location: Connecticut
Posts: 2,343
|
Quote:
|
|
07-12-2022, 08:23 PM | #7 |
Drives: 2017 ZL1 Join Date: Jan 2017
Location: NJ
Posts: 905
|
The car is running rich on Bank 2 (passenger side), not lean. It shows -14% on LTFT Bank2 meaning it thinks that bank is running too rich and is pulling fuel. You can see Bank2 injector average pulse width is smaller than bank one, this is due to the LTFT being negative.
If it was running lean I would have told you to go inspect the passenger side midpipe to header connection for air leaks. This would have made sense with you doing the converter, the mid pipes would have been removed. Air leaks would have made that side look lean at idle and not as bad at high rpm due to the ratio of leak to exhaust changing. I don't think is what is going on being that it thinks it is too rich. Going rich is another thing... Do you have a WB02 sensor in that bank to compare NB02 to? Did you change NB02 switch voltages in the tune when you added the headers? Are they the same or different values for each bank? Note that 3rd pull on the log had over 6° of knock. Not sure what else tuning wise you've done but keep an eye on it. Might be false knock due to headers since it occurs from 2800-4400 only. Would need to see logs.
__________________
2017 Camaro ZL1 Coupe M6 (847whp Dynojet on 93)
Last edited by LiqTenExp; 07-12-2022 at 08:55 PM. |
|
|
Post Reply
|
Tags |
converter, lean idle |
Thread Tools | |
|
|