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Tundra thread last resort

Discussion in 'Performance and Tuning' started by Tonytlr1000, Jun 17, 2017.

  1. Jun 17, 2017 at 4:11 PM
    #1
    Tonytlr1000

    Tonytlr1000 [OP] New Member

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    ok this is my last resort. I've been to 2 Toyota Dealerships, 2 tune shops and every internet page I could find to give me a solution for my Tundra.

    I have a 2013 Tundra Flex Fuel 4x4 that I've been running a TRD Supercharger/Unichip combo since day one. The SC was put on by a Toy mech but not the dealership. The truck has run amazing for the last 38k miles but in the last month the truck is now throwing P1072 & P1075 codes which indicate that it is running too rich in Bank 1 & Bank 2.
    Took it to the dealership which they found the alcohol level was up to 30%. They told me they had to reprogram the truck and off I went. It lasted 15 miles until the dash board lit up like a fireworks show. The dealership said it must be the Unichip causing it so call them. I contacted Unichip which they said no way it's their chip. They said that if their chip was malfunctioning that my truck wouldnt even run.
    I then went to a couple tune shops and they all didn't want the job due to the truck being a Flex Fuel.
    I've changed the filter, I've replaced the Mass Air Flow Sensor, replaced both upstream Oxygen sensors with OEM new sensors, ran a full tank of fuel injector cleaner, checked for vaccum leaks, I only use 91 octane fuel.
    I clear the codes and within 10 miles they come back again. I am completely out of ideas. I am hoping that somebody has that one solution that will do the trick.
    I really don't want to take off the SC. Help!
     
  2. Jun 17, 2017 at 4:18 PM
    #2
    T-Rex266

    T-Rex266 Sushi, and Teslas Staff Member

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  3. Jun 17, 2017 at 4:22 PM
    #3
    LOTSOFTOYS

    LOTSOFTOYS Toyota Whisperer

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    This is why u don't sc a flex fuel truck...


    But since u did. Now you have to deal with the headache of making everything run correctly. I'm wondering after the dealer reflashed the ecu, if it doesn't want to play nicely with the uni chip now...

    It's still only throwing those two codes? Which btw those codes aren't correct. P0###....
     
    Law323 and T-Rex266 like this.
  4. Jun 17, 2017 at 4:31 PM
    #4
    Tonytlr1000

    Tonytlr1000 [OP] New Member

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    Oh,
    the correct codes are P0172 & P0175.

    I agree Flex Fuel was a mistake but was told it was a good option to put on a SC because of the large fuel lines and fuel pump that could handle the SC.
     
  5. Jun 17, 2017 at 4:33 PM
    #5
    COMiamiFan

    COMiamiFan SSEM #3. Don't forget to try the search bar. #PSL

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    Welcome to the forum; sorry had to be this way tho.
     
  6. Jun 17, 2017 at 4:35 PM
    #6
    LOTSOFTOYS

    LOTSOFTOYS Toyota Whisperer

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    Who ever told u that isn't very bright...

    U need to find out what your alcohol density is reading. And what your fuel trims are
     
    T-Rex266 likes this.
  7. Jun 17, 2017 at 5:21 PM
    #7
    tomsinamerica

    tomsinamerica New Member

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    i gotta admit... i'm not sure i like the response from unichip. that aside...

    What lights are showing since the dealership visit and what codes are being thrown? my guess is that the immediate problem may be unrelated to the original rich banks codes....
     
  8. Jun 17, 2017 at 11:09 PM
    #8
    dirtydeeds

    dirtydeeds New Member Vendor

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    more than I can list here
    Give me a call. I can send a solution that will correct this problem.

    760-877-4234
     
    HARPER306, Harris1881, DVYota and 5 others like this.
  9. Jun 18, 2017 at 9:00 AM
    #9
    Tonytlr1000

    Tonytlr1000 [OP] New Member

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    Kieth I'll give you a call next week since I am in Mexico!
    Thanks for the reply.

    The 4Lo light is flashing, engine light, trac light, slip light are all steady.
     
  10. Jun 18, 2017 at 9:39 AM
    #10
    T-Rex266

    T-Rex266 Sushi, and Teslas Staff Member

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  11. Sep 6, 2018 at 5:46 PM
    #11
    Vpempek

    Vpempek New Member

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    Did u ever get it fixed having the same thing going on
     
  12. Apr 5, 2019 at 3:28 PM
    #12
    frogger

    frogger just boost it

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    too much to list
    bump

    having same code after installing my s/c
     
  13. Jun 9, 2020 at 8:34 PM
    #13
    SaulofTarsis

    SaulofTarsis New Member

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    Any solution?? Im having exact same coded/probkem and lights. Also flex fuel.
     

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