been running lean for quite some time, my maf sensor went out as well as about 4 o2 sensors, i bought a code reader and this is what it says


p0171

then i have freeze frame data on the specs of my car when the cel came on


fuel sys1 cl
fuel sys2 na
calc load 13.33%
ect 81(celcius)
stft 25.78%
ltft 29.69%
map 39.00 kpa
eng rpm 1990
speed 85kmph
spark advance 34.00
iat 2 (celcius)
maf 8.22g/s
tps 28.28
o2s bank 1 sensor 1 .85
stft bank1 sensor 1 25.78%
o2s bank 1 sensor 2 .13
stft bank 1 sensor 2 99.22%



help me figure out my problem!

the light went back out but i kow im still lean *(i always am) help!

 

Car is bone stock, not even an intake...only mod is, sunglass holders lol

 

What years the car ?
Do you live close to sea level or at altitude.
Have no idea where clemons is.

Also did you buy the car new?
If not it could have been modded and then had everything removed.

 

im in the peidmont region of NC, no mountains here just a few hills lol. its an 06 with 75 thousand miles

bought it used a year ago, cel was on then, running the code it said lean, been that way ever since

id say im closta sea level

 

Im assuming its a lsj(Supercharged)
If so take alook at the supercharger pulley, do the pulley mounting bolts look like they have been
Touched,if they are blue then a stage 2 pulley is on it.

It could of been modded and the parts removed but the pulley left on and the tune reflashed back to stock.

 

^^that would be the only way u could be running lean if ur cobalt is stock and has a smaller pulley with no injector and untuned. check that and that can be one problem. second, what boost numbers are u looking at?

 

def the stock pulley, 12 lbs