check engine light!!

[yellowstang03]

i was driving around last night and my check engine light came on and the codes were
P1130 Lack of Upstream Heated Oxygen Sensor Switch - Adaptive Fuel Limit - Bank No. 1.
P1131 Lack of Upstream Heated Oxygen Sensor Switch - Sensor Indicates Lean - Bank No. 1.

does anyone know what the cause of that could be?

[Rodeheaver's]

THis should help,P1130 - Lack of HO2S-11 Switch, Fuel Trim at Limit The HEGO Sensor is monitored for switching. The test fails when the HO2S fails to switch due to circuit or fuel at or exceeding a calibrated limit. Electrical:
Short to VPWR in harness or HO2S
Water in harness connector
Open/Shorted HO2S circuit
Corrosion or poor mating terminals and wiring
Damaged HO2S
Damaged PCM
Fuel System:
Excessive fuel pressure
Leaking/contaminated fuel injectors
Leaking fuel pressure regulator
Low fuel pressure or running out of fuel
Vapor recovery system
Induction System:
Air leaks after the MAF
Vacuum Leaks
PCV system
Improperly seated engine oil dipstick
EGR System:
Leaking gasket
Stuck EGR valve
Leaking diaphragm or EVR
Base Engine:
Oil overfill
Cam timing
Cylinder compression
Exhaust leaks before or near the HO2S(s)
A fuel control HO2S PID switching across 0.45 volt from 0.2 to 0.9 volt indicates a normal switching HO2S.
P1131 - Lack of HO2S-11 Switch, Sensor Indicates Lean A HEGO sensor indicating lean at the end of a test is trying to correct for an over-rich condition. The test fails when the fuel control system no longer detects switching for a calibrated amount of time. See Possible Causes for DTC P1130

[yellowstang03]

uh oh ha ha looks like it might be a long day....thank you very much for the info

[yellowstang03]

actually thinkin about it i was in 4th gear about 4thousand rpm i let off and it started breaking up pretty bad and i didnt know why then i got back on it and it was fine it did seem like it was running out of fuel..

[Rodeheaver's]

how is it running right now?? something like that is kinda hard to say, i would almost have to have it here to diagnos it..

[yellowstang03]

it seems to run fine now it only broke up like that one time then about 5 minutes later it threw the light on so i cleared it then it came right back on

[Rodeheaver's]

ooowww, cant really say, would have to have it here to check it out...

[Troll]

didn't you just put longtube headers on? check the connections on your front O2 sensors on both sides... and/or did you put O2 extensions on, too? check all the connections.

[yellowstang03]

good idea....i did put the extensions on...and also i just got my sct live wire hooked up last night at the same time so who knows what it could be lol

[Rodeheaver's]

i think one o2 wire is on the engine harness and one is on the tranny harness, so make sure you have em hooked up correct, IE: left/right bank, i think they are color coated..

[yellowstang03]

thanks alot for the info guys. i'll be checking all of it out today ill let you know what i find.