1. Welcome to Tundras.com!

    You are currently viewing as a guest! To get full-access, you need to register for a FREE account.

    As a registered member, you’ll be able to:
    • Participate in all Tundra discussion topics
    • Transfer over your build thread from a different forum to this one
    • Communicate privately with other Tundra owners from around the world
    • Post your own photos in our Members Gallery
    • Access all special features of the site

Need Help with Power Loss

Discussion in '2nd Gen Tundras (2007-2013)' started by jtg1441, Apr 5, 2023.

  1. Apr 5, 2023 at 6:17 PM
    #1
    jtg1441

    jtg1441 [OP] New Member

    Joined:
    Apr 5, 2023
    Member:
    #95023
    Messages:
    6
    Gender:
    Male
    First Name:
    John
    Vehicle:
    07 Tundra 4.7I
    New to Toyota. I recently purchased a 2008 Tundra 4.7I. After driving the truck for a few weeks, my VSC flashing and trac control & check engine light came on and a significant loss of acceleration power. OBD2 shows Code P0419 SAIS Relay "B" Circuit. The fix finder report Autozone printed out after the OBD2 reading says to replace Air Injection Pump & Diverter Valve. My question is would a SAIS Bypass kit fix the problem permanently or should I replace with OEM parts.
     
  2. Apr 5, 2023 at 7:51 PM
    #2
    blackdemon_tt

    blackdemon_tt Battery Slayer

    Joined:
    Feb 27, 2020
    Member:
    #43241
    Messages:
    3,050
    Gender:
    Male
    Vehicle:
    2007 5.7l Tundra DC SR5 long bed 2wd
    TRD Sway Bar, Roll covers USA bed cover
    There is 2 ways to go about it, if your state doesn't require a vehicle inspection. You can either look up the SAIS bypass on this site and self-educate on it, which is considerably cheaper than replacing OEM parts and effective. #2 replace with aftermarket and/or OEM parts, which may be more expensive, but necessary if you require an inspection.

    It will fix the problem permanently, until it requires to be replaced again, for OEM/aftermarket replacement parts.
     
  3. Apr 6, 2023 at 6:44 AM
    #3
    jtg1441

    jtg1441 [OP] New Member

    Joined:
    Apr 5, 2023
    Member:
    #95023
    Messages:
    6
    Gender:
    Male
    First Name:
    John
    Vehicle:
    07 Tundra 4.7I
    Ok thank you.
     

Products Discussed in

To Top