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Secondary air system

Discussion in 'General Tundra Discussion' started by briand, Mar 16, 2025.

  1. Mar 16, 2025 at 10:49 AM
    #1
    briand

    briand [OP] New Member

    Joined:
    Mar 13, 2025
    Member:
    #131831
    Messages:
    5
    Gender:
    Male
    First Name:
    Brian
    Vehicle:
    2011 tundra 5.7
    None
    New pumps New Valves new hose fans come on and blow good air still getting P2445 and P2447
    Bank one and two fan stuck off and check engine light on. I know about the bypass kit but I am in deep$ already and want to get it sorted.
     
  2. Mar 16, 2025 at 11:16 AM
    #2
    Mdl

    Mdl Hey there...

    Joined:
    Jun 14, 2023
    Member:
    #98638
    Messages:
    2,914
    Gender:
    Male
    PNW, WA
    Vehicle:
    2007 TRD SC'd
    JBA Longtubes, Snivs 2.0 SC pulley, ASP crank overdrive pulley 6.71 in, DD Full 3inch dual exhaust, IPT valve body, Airbox mod, 4.5inch intake, Denso 750, 450 Walbro, W/M injection, GM 95mm TB, SABM, Camburg UCA, Icon shocks, Speedmaster LSD, Motive 5.29 Gears, Mickey Thompson Baja Legend EXP 35's, DIY Traction Bars, Tuning by snivspeedshop.com
    I really despise this system...I'd go over all my connections again. Look for any pulled wires.
    Screenshot_20250316_111513.jpg
     
  3. Mar 16, 2025 at 12:53 PM
    #3
    briand

    briand [OP] New Member

    Joined:
    Mar 13, 2025
    Member:
    #131831
    Messages:
    5
    Gender:
    Male
    First Name:
    Brian
    Vehicle:
    2011 tundra 5.7
    None
    The system comes on and seems to run fine. I have physically held each pump to make sure they turn on. I have also taken the hoses off to be sure they turn on and are blowing a lot of air. So I can’t understand the code stating stuck off bnk 1 & bnk 2. What“reads them ? Does 02 sensor read flow
    Or does the module get a response NO info Ron the modulle
     
  4. Mar 16, 2025 at 1:18 PM
    #4
    Mdl

    Mdl Hey there...

    Joined:
    Jun 14, 2023
    Member:
    #98638
    Messages:
    2,914
    Gender:
    Male
    PNW, WA
    Vehicle:
    2007 TRD SC'd
    JBA Longtubes, Snivs 2.0 SC pulley, ASP crank overdrive pulley 6.71 in, DD Full 3inch dual exhaust, IPT valve body, Airbox mod, 4.5inch intake, Denso 750, 450 Walbro, W/M injection, GM 95mm TB, SABM, Camburg UCA, Icon shocks, Speedmaster LSD, Motive 5.29 Gears, Mickey Thompson Baja Legend EXP 35's, DIY Traction Bars, Tuning by snivspeedshop.com
    The ecu will command it to come on when under a certain temp and for your year it will command an occasional pulse to ensure system is operable. The drivers ( by engine fuse box/master cylinder) will send out the signal to the pumps/valves.
    Are the pressure sensors blocked or? It'll definitely give you grey hair...trying to figure it out. The chart below is for 4.6 but still applicable.
    https://www.ttundra.com/878/secondary_air_injection_system_pump_stuck_on_bank1_p2444_p2447_.html
     
    Tunrod likes this.

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