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-   -   02 issue, help needed!! (https://www.performancetrucks.net/forums/tuning-diagnostics-electronics-wiring-161/02-issue-help-needed-527503/)

Boxd_Lunch Mar 13, 2014 07:35 PM
02 issue, help needed!!
 
I have an 04 silverado ( lq4, cam, lts, x pipe, etc..) and i have been fighting an 02 sensor issue for a while now, I have them turned off at the moment and everything seems fine minus some driveabilty and fuel mileage. But if i turn them back on (with hp tuners) right now it will drive perfect for a few days and then i can fire it up randomly one time and bank 2 seems like its reading fresh air and throwing a ton of fuel at the motor, i have checked,replaced cleaned the ground at the back of the block and head and replaced 02s with no luck.


anyone else having a similar issue with any help or ideas on what else to check would be very appreciated.

Last Call Mar 13, 2014 11:08 PM
Originally Posted by Boxd_Lunch (Post 5200850)
I have an 04 silverado ( lq4, cam, lts, x pipe, etc..) and i have been fighting an 02 sensor issue for a while now, I have them turned off at the moment and everything seems fine minus some driveabilty and fuel mileage. But if i turn them back on (with hp tuners) right now it will drive perfect for a few days and then i can fire it up randomly one time and bank 2 seems like its reading fresh air and throwing a ton of fuel at the motor, i have checked,replaced cleaned the ground at the back of the block and head and replaced 02s with no luck.


anyone else having a similar issue with any help or ideas on what else to check would be very appreciated.
Have you logged the voltage and compared bank to bank?


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