Reward if solved...O2 help!!!
Hers the story!!!

Installed LT's and SES light came on. Scanned:

Bank #1 Too lean
Bank #2 Too lean

Did a vacuum leak test and found nothing!

Did a O2 sensor scan:

Bank #1 Sensor #2, not toggling.

Replaced that sensor and EGR gasket(looked beat up). Reset computer. Scanned again:

Bank #1 Too lean
Bank #2 Too lean

Rescanned O2's ....same thing, Bank #1 Sensor #2 not toggling.

What could majically make this sensor not toggle, there are NO pinched or cut wires and no leaks. Do I need MIL's or are the O2's protected by a fuse that maybe popped?? Can I safely delete the rear 2 with MIL's or a chip?? This s*** is driving me crazy!!!

 

first when i see lean on bank 1&2 i think fuel filter. but the o2 toggling thing is beyond me.

 

when I got the error on my L, I replaced the 80mm MAF to a 90mm maf and didn't have the chipped burned for about 3 days.

that was my problem.
just a thought.

 

http://www.nhtoc.com/forum/showthread.php?threadid=4289