Justin93

iTrader: (7)

I now have P0171 and P0174 PENDING
Ive searched for vacum leaks and nothing, I have a Stock MAF, My plugs and wires are only 3 months old, Please help Im at a loss!!!

My mods are as Follows, K&N FIPK, Kooks Long tubes, Texas Speed ypiped and Catback, Ported TB from TPIS,Crane Plug wires, NGK TR55 Iridium plugs, LS6 PCV conversion, and Thunder Racing Catch Can

Below is my Freeze Frame Data!
Year: 2002
Make: Chevrolet
Model: Camaro Z-28
Engine:5.7L SFI
VIN:
License:
Mileage:

Stored:
P0171 System Too Lean (Bank 1)

Pending:
P0171 System Too Lean (Bank 1)
P0174 System Too Lean (Bank 2)

MIL ON
Misfire Monitoring Complete
Fuel System Monitoring Complete
Comprehensive Component Monitoring Complete
Catalyst Monitoring Complete
Heated Catalyst Monitoring Not Supported
Evaporative System Monitoring Not Complete
Secondary Air System Monitoring Complete
A/C System Refrigerant Monitoring Not Supported
Oxygen Sensor Monitoring Not Complete
Oxygen Sensor Heater Monitoring Not Complete
EGR System Monitor Not Supported

DTC For Which Freeze Frame Was Stored P0171
Fuel System 1 Status Closed Loop
Fuel System 2 Status Closed Loop
Calculated LOAD Value 3.92 %
Engine Coolant Temp 195.8 °F
Short Term Fuel Trim-Bank 1 15.63 %
Long Term Fuel Trim-Bank 1 25.00 %
Short Term Fuel Trim-Bank 2 16.41 %
Long Term Fuel Trim-Bank 2 25.00 %
Fuel Rail Pressure 13.3 inHg
Engine RPM 1029.25 rpm
Vehicle Speed Sensor 8.1 mph
Air Flow Rate from Mass Air Flow Sensor 1.548 lb/min
Absolute Throttle Position 5.10 %

Justin93

iTrader: (7)

anyone have any Ideas? So far I've replaced the intake gaskets, Injector orings, and checked like crazy for any vacuum issues! I get about 59 psi when I checked the fuel pressure today while at idle. Im at a loss here. Whats my Next option? Replace the Bank one 02 sensor?

FNQUIKWS6

iTrader: (2)

i have the same codes bro and cant figure it out, i replaced my o2's and the codes are still there; let me know if you figure yours out, and ill do the same. good luck!

Justin93

iTrader: (7)

I think I may have, It seems that the hose that runs from the ls6 valley to the side of the air intake manifold might have been the culprit. It was apparently letting too much air get sucked from the engine.

I put a slight kink in the line that was just enough to restrict airflow just so slightly and noticed the car immediately started running way better at idle and no longer stumbled. Im probably going to source a stock pcv valve tomorrow and put that inline with the air intake end of the hose to reduce the wideopen flow effect that had.

sreve

iTrader: (3)

header gaskets leak? throw a fuel filter at it. o2s switching? did you check the manifold
for cracks? air leak at iat or other hose leak?

just throwing stuff out there

Justin93

iTrader: (7)

solved the problem, It turned out that the catch can was letting too much crank air into the intake manifold causing the lean code to pop up. I put my stock pcv valve in right after the out line on the catch can and boom problem solved, gave me enough restriction!!!! car idles great, shifts great, and flat out hauls ***!!!!! Thanks for the help guys!