completly confused
 

Ok so i keep goin into limp mode. and im getting codes
17536- System Bank1, too lean
and
17545- System Bank 1, Too Rich

anyone have any idea how i'm running lean and rich at the same time.(and neither one is an old code cause i put everything back to stock and cleared all the codes yesterday and these 2 poped up today)

RE: completly confused
 

bad sensor.

RE: completly confused
 

If your EBC isn't going haywire and your tuning software is working fine i would say its the upstream O2 sensor.

RE: completly confused
 

air vacuum leak

RE: completly confused
 

Damn dave that was deep.

RE: completly confused
 

i just changed my o2 sensor so it should be good, i put the n75 back in when i first got the lean codes and i've put it back to stock tunning. Hmmm... i guess i'll check for vac leaks

RE: completly confused
 

Clean your MAF while your at it.

RE: completly confused
 

did that yesterday too, would a bad map possibly cause these problems

RE: completly confused
 

Not likely, checking for vaccum leaks, and exhaust leaks are your best bet.

RE: completly confused
 

ok