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  1. #1
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    Javier
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    Default Running Rich and throwing codes

    That didnt take long, LOL

    So the WS6 is starting to run pretty rich and idle a little rough, but running decent.

    I took my scanner with me and watched it while driving to work.

    Yesterday I just got P0151, P0174 and P0400. The P0400 has been going on and off since I put the longtubes. Also I am still running o2 simulators on the downstream until I can install the duals

    Today I got P0151, P0400, P1153 and to top it all off, P0300...
    I will get some cold and hot idle numbers later on the drive home.
    97 Trans Am WS6, LT1 factory 4bolt freak, M6,
    68 Firebird 400, YC 400, 670 heads M4
    14 Fiat 500e
    , 83kW motor, 24kWh 364 V battery

  2. #2
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    Cameron
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    Default

    Sounds like you need some new O2's. The P0300 could be from the O2's being jacked.
    2012 Sierra - 5.3, Summit "Stage 1" Truck Cam
    1994 Jimmy - LS? LT? 4wd? AWD? Time? Money?
    1994 Formula - 5.3, Terminator X, Billet VS7875, "Best Cam", T56, QP 9"
    Formula Build Thread


  3. #3
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    I think the O2 did go out, here are my logs:

    Cold Engine off, foot on brake
    Fuel system status: Fuel system 1: Open Loop (0)
    Fuel system status: Fuel system 2: Open Loop (0)
    Calculated Engine Load: 0.0%
    Coolant temp: 82F
    Short Term Fuel Trim - Bank 1: 0.0%
    Long Term Fuel Trim - Bank 1: 0.0%
    Short Term Fuel Trim - Bank2: 0.0%
    Long Term Fuel Trim - Bank 2: 0.0%
    Intake Absolute Pressure: 28.9 inHg
    Ignition Timing Advance: 0.0
    Intake Air Temp: 82F
    Airflow rate from MAF: 0.0 lb/min
    Throttle pos 0.0%
    Bank 1 sensor 1 (O2S) Output: 0.010 V
    Bank 1, Sensor 1 Short Term Fuel Trim: 0.0%
    Bank 1 sensor 2 (O2S) Output: 0.705 V (simulator)
    Bank 1, Sensor 2 Short Term Fuel Trim: 0.0%
    Bank 2 sensor 1 (O2S) Output: 0.010 V
    Bank 2, Sensor 1 Short Term Fuel Trim: 0.0%
    Bank 2 sensor 2 (O2S) Output: 0.695 V (simulator)
    Bank 2, Sensor 2 Short Term Fuel Trim: 0.0%

    Cold Idle, neutral, foot on brake
    Fuel system status: Fuel system 1: Open Loop (0)
    Fuel system status: Fuel system 2: Open Loop (0)
    Calculated Engine Load: 3.9%
    Coolant temp: 84F
    Short Term Fuel Trim - Bank 1: 0.0%
    Long Term Fuel Trim - Bank 1: 0.0%
    Short Term Fuel Trim - Bank2: 0.0%
    Long Term Fuel Trim - Bank 2: 0.0%
    Intake Absolute Pressure: 8.9 inHg
    Ignition Timing Advance: 18.0
    Intake Air Temp: 84F
    Airflow rate from MAF: 1.4 lb/min
    Throttle pos 0.0%
    Bank 1 sensor 1 (O2S) Output: 0.035 V
    Bank 1, Sensor 1 Short Term Fuel Trim: 0.0%
    Bank 1 sensor 2 (O2S) Output: 0.440 V (simulator)
    Bank 1, Sensor 2 Short Term Fuel Trim: 0.0%
    Bank 2 sensor 1 (O2S) Output: 0.010 V
    Bank 2, Sensor 1 Short Term Fuel Trim: 0.0%
    Bank 2 sensor 2 (O2S) Output: 0.800 V (simulator)
    Bank 2, Sensor 2 Short Term Fuel Trim: 0.0%

    Hot Idle, neutral, foot on brake
    Fuel system status: Fuel system 1: Open Loop (0)
    Fuel system status: Fuel system 2: Open Loop (0)
    Calculated Engine Load: 2.4%
    Coolant temp: 197F
    Short Term Fuel Trim - Bank 1: 0.0%
    Long Term Fuel Trim - Bank 1: 0.0%
    Short Term Fuel Trim - Bank 2: 0.0%
    Long Term Fuel Trim - Bank 2: 0.0%
    Intake Absolute Pressure: 8.0 inHg
    Ignition Timing Advance: 20.0
    Intake Air Temp: 87F
    Airflow rate from MAF: 0.9 lb/min
    Throttle pos 0.0%
    Bank 1 sensor 1 (O2S) Output: 0.820 V
    Bank 1, Sensor 1 Short Term Fuel Trim: 0.0%
    Bank 1 sensor 2 (O2S) Output: 0.425 V (simulator)
    Bank 1, Sensor 2 Short Term Fuel Trim: 0.0%
    Bank 2 sensor 1 (O2S) Output: 0.010 V
    Bank 2, Sensor 1 Short Term Fuel Trim: 0.0%
    Bank 2 sensor 2 (O2S) Output: 0.830 V (simulator)
    Bank 2, Sensor 2 Short Term Fuel Trim: 0.0%

    Hot, engine off, neutral, foot on brake
    Fuel system status: Fuel system 1: Open Loop (0)
    Fuel system status: Fuel system 2: Open Loop (0)
    Calculated Engine Load: 0.0%
    Coolant temp: 201F
    Short Term Fuel Trim - Bank 1: 0.0%
    Long Term Fuel Trim - Bank 1: 0.0%
    Short Term Fuel Trim - Bank 2: 0.0%
    Long Term Fuel Trim - Bank 2: 0.0%
    Intake Absolute Pressure: 28.9 inHg
    Ignition Timing Advance: 20.0
    Intake Air Temp: 87F
    Airflow rate from MAF: 0.9 lb/min
    Throttle pos 0.0%
    Bank 1 sensor 1 (O2S) Output: 0.810 V
    Bank 1, Sensor 1 Short Term Fuel Trim: 0.0%
    Bank 1 sensor 2 (O2S) Output: 0.425 V (simulator)
    Bank 1, Sensor 2 Short Term Fuel Trim: 0.0%
    Bank 2 sensor 1 (O2S) Output: 0.010 V
    Bank 2, Sensor 1 Short Term Fuel Trim: 0.0%
    Bank 2 sensor 2 (O2S) Output: 0.440 V (simulator)
    Bank 2, Sensor 2 Short Term Fuel Trim: 0.0%
    I wonder why my MAF is showing 0.9 with the engine off... I wonder if it froze it at 0.9 when I shut the key off

    also odd is that it didnt go into closed loop.
    97 Trans Am WS6, LT1 factory 4bolt freak, M6,
    68 Firebird 400, YC 400, 670 heads M4
    14 Fiat 500e
    , 83kW motor, 24kWh 364 V battery

  4. #4
    LTx Guru


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    Default

    The code is for a low voltage reading on the passenger side (Bank 2) pre-cat sensor. Appears to be stuck at 0.010 volts. Failed O2 sensor or problem with the wiring, like a short between the tan and purple wires, or purple and black wires.

    One way to check.... swap the pre-cat O2 sensors side-to-side. If the code follows the sensor to Bank 1 (P0131), it's a sensor problem. If the code stays on Bank 2, it's a wiring problem.

    The sensors and PCM parameters are not all read at the same instant. The PCM sequences through them. It's possible the freeze frame pulled the MAF and some of the other values while the engine was still running, and the remainder an instant later when you turned off the key.

    A real continuous log is much easier to analyze than the freeze frames.
    Last edited by Injuneer; 05-26-2017 at 11:44 AM.
    SOLD - GONE TO A (VERY) GOOD HOME ! - 94 Formula A3+1: 381ci forged stroker - Callies Stealth, Oliver 5.85 billet rods, BME nitrous pistons / CNC LT4 heads / CC solid roller / TH400+GearVendors OD / 4.11 Strange 12-bolt / 300-shot N2O / Spohn Suspension / roll bar / MoTeC M48 Pro engine management system /a few other odds 'n ends.

  5. #5
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    Default

    Quote Originally Posted by Injuneer View Post
    The code is for a low voltage reading on the passenger side (Bank 2) pre-cat sensor. Appears to be stuck at 0.010 volts. Failed O2 sensor or problem with the wiring, like a short between the tan and purple wires, or purple and black wires.

    One way to check.... swap the pre-cat O2 sensors side-to-side. If the code follows the sensor to Bank 1 (P0131), it's a sensor problem. If the code stays on Bank 2, it's a wiring problem.

    The sensors and PCM parameters are not all read at the same instant. The PCM sequences through them. It's possible the freeze frame pulled the MAF and some of the other values while the engine was still running, and the remainder an instant later when you turned off the key.

    A real continuous log is much easier to analyze than the freeze frames.
    I was gonna swap them this weekend, your post definitely makes me think Im headed in the right direction.

    I cant remember how I routed the wires when I put in the long tubes, hopefully its just a bad O2 or the pigtail on the O2 and not the harness...

    as far as continuous log vs freeze frames, one of the reason that I bought this app for my phone and not the others is because it claimed data logging, so far I think they mean that it keeps the freeze frame. I sent the developer an email, hopefully the logs are somewhere in there and I jsut cant find them
    97 Trans Am WS6, LT1 factory 4bolt freak, M6,
    68 Firebird 400, YC 400, 670 heads M4
    14 Fiat 500e
    , 83kW motor, 24kWh 364 V battery

  6. #6
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    Default

    Did the long tubes require O2 sensor extensions? If so, bought, or made your own?
    SOLD - GONE TO A (VERY) GOOD HOME ! - 94 Formula A3+1: 381ci forged stroker - Callies Stealth, Oliver 5.85 billet rods, BME nitrous pistons / CNC LT4 heads / CC solid roller / TH400+GearVendors OD / 4.11 Strange 12-bolt / 300-shot N2O / Spohn Suspension / roll bar / MoTeC M48 Pro engine management system /a few other odds 'n ends.

  7. #7
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    Javier
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    Quote Originally Posted by Injuneer View Post
    Did the long tubes require O2 sensor extensions? If so, bought, or made your own?
    I do remember talking to Fastbird about extensions, but cant remember if it was for the planned downstream ones, or the ones on the collectors.

    I went home for lunch and it went into closed loop and holycow the bank 2 trim went to like 50% and it idled like my weedeater

    Side note, whats up with your website Injuneer? I tried to go to your scan data and its giving me 404
    97 Trans Am WS6, LT1 factory 4bolt freak, M6,
    68 Firebird 400, YC 400, 670 heads M4
    14 Fiat 500e
    , 83kW motor, 24kWh 364 V battery

  8. #8
    LTx Guru


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    My website disappeared several years ago. Buddy of mine was hosting it free, but he lost access to the server.

    Do you want the scanner writeup?
    Attached Files Attached Files
    SOLD - GONE TO A (VERY) GOOD HOME ! - 94 Formula A3+1: 381ci forged stroker - Callies Stealth, Oliver 5.85 billet rods, BME nitrous pistons / CNC LT4 heads / CC solid roller / TH400+GearVendors OD / 4.11 Strange 12-bolt / 300-shot N2O / Spohn Suspension / roll bar / MoTeC M48 Pro engine management system /a few other odds 'n ends.

  9. The Following 3 Users Say Thank You to Injuneer For This Post:


  10. #9
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    Javier
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    Quote Originally Posted by Injuneer View Post
    My website disappeared several years ago. Buddy of mine was hosting it free, but he lost access to the server.

    Do you want the scanner writeup?
    WOW, I had no idea, that sucks. Sheesh I have been out of the game too long.

    Yes thanks
    97 Trans Am WS6, LT1 factory 4bolt freak, M6,
    68 Firebird 400, YC 400, 670 heads M4
    14 Fiat 500e
    , 83kW motor, 24kWh 364 V battery

  11. #10
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    Javier
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    1997 Trans Am WS6
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    Default

    SO, in addition to that, I am getting a P1153, P0154 and occasionally P0303 (and P0300 some times), which doesn't make sense to me since that is Bank#1 cylinder, but all the O2 codes are on the Bank #2

    SHEESH.

    I am going to pull the O2s this weekend and check them out.

    Further frustration is that even though the app I use for OBD2 scanning says it has "datalogging" but its only stored in active memory and cannot be saved or sent, only the snapshot during the code...
    97 Trans Am WS6, LT1 factory 4bolt freak, M6,
    68 Firebird 400, YC 400, 670 heads M4
    14 Fiat 500e
    , 83kW motor, 24kWh 364 V battery

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