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Gas mileage dropped drastically

Discussion in 'General Tundra Discussion' started by Woodtickmp, Mar 13, 2019.

  1. Mar 13, 2019 at 5:20 PM
    #1
    Woodtickmp

    Woodtickmp [OP] Black beast/beauty/pearl

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    Mathew
    west bend WI
    Vehicle:
    2010 tundra double cab black TRD rock warrior
    3in front leveling kit with camburg engineering upper A-arms, 2in block in the rear and 6 pack leafs, 295/65/17
    I have a 2010 trd rock warrior with 3in lift in the front and 4in lift in the rear. I have camburg ucas and am running 295/70/17 for tires I have had this size on the truck for 4 years. I just put new tires on that are the same size but 7lbs heavier then the last set I used to get 330 miles to a tank of gas now I'm getting around 211 miles to a tank. What could cause this to drop so much? Like I said before I have been running this size for 4 years and never noticed a drop in mileage. Also when I'm in 4hi and i get on the throttle it pulls hard right do you all think? An help is appreciated
     
    Last edited: Mar 13, 2019
  2. Mar 13, 2019 at 5:59 PM
    #2
    Alexstundra

    Alexstundra Not a new member

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    Northeast PA
    Vehicle:
    2016 MGM DC Trd
    3-1 level kit with add a leaf. 295/70/18r cooper max. Spider head light tail light and third brake light, tint, badges off, ladder racks, trd pro grill, color matched hood bulge, grab handle,coach builder +2, dv8 front bumper with winch, fender flares, bed cover....
    Did you go from a AT tire to a MT tire?
     
  3. Mar 13, 2019 at 6:00 PM
    #3
    Alexstundra

    Alexstundra Not a new member

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    Northeast PA
    Vehicle:
    2016 MGM DC Trd
    3-1 level kit with add a leaf. 295/70/18r cooper max. Spider head light tail light and third brake light, tint, badges off, ladder racks, trd pro grill, color matched hood bulge, grab handle,coach builder +2, dv8 front bumper with winch, fender flares, bed cover....
    Also did brand tire might be as much as a .75” difference in height or width. But that is a lot
     
  4. Mar 13, 2019 at 6:02 PM
    #4
    15whtrd

    15whtrd Mr. Blonde

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    SoCal
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    White 2015 Tundra DC SR5 TRD 4x4 5.7L, White 2003 Sequoia 2WD
    TRD Pro suspension, +2 Coachbuilder shackles, 2015 TRD Pro headlights, 20% ceramic tinted windows, charcoal filter delete, aFe drop in pro s dry air filter, TRD airflow accelerator, TRD oil fill cap, TRD 18 psi radiator cap, BDX Bullydog tuner, Weathertech floor mats front and rear, rear seat fold down mod, Tyger soft tonneau cover, Linex with uv protection, TRD swaybar, TRD center caps, TRD Pro grille insert, aluminum oil filter canister, Real truck tailgate seal, Pop-n-lock tailgate lock actuator, rear diff breather relocate, RCI front skid plate.
    Gas mileage hand calculated before and after?
     
    Alexstundra likes this.
  5. Mar 13, 2019 at 6:29 PM
    #5
    Woodtickmp

    Woodtickmp [OP] Black beast/beauty/pearl

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    Mathew
    west bend WI
    Vehicle:
    2010 tundra double cab black TRD rock warrior
    3in front leveling kit with camburg engineering upper A-arms, 2in block in the rear and 6 pack leafs, 295/65/17
    Both are AT and the new size is I alittle bit taller but same width. I was noticing the gas mileage dropping before I started looking at new tires in November and just did a trip to Kentucky and realized how bad it really got. not sure why
     
  6. Mar 13, 2019 at 6:31 PM
    #6
    shawn.roe24

    shawn.roe24 New Member

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    What air pressure are you running? I noticed with mine when I run at 35psi I get 12mpg if I run at 50psi I get 14.7mpg
     
  7. Mar 13, 2019 at 6:34 PM
    #7
    Jengel451

    Jengel451 Misanthropist

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    The Bitterroot, MT
    Vehicle:
    2017 Barcelona TRD Limited CrewMax
    3/1.5 Toytec/Icon AAL, 17" Rebounds, 317-70-70 ST Maxx's
    So the tires are a red herring? This started before tires.

    Air filter. Hanging brakes, need tune up....
     
  8. Mar 13, 2019 at 6:35 PM
    #8
    Woodtickmp

    Woodtickmp [OP] Black beast/beauty/pearl

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    Mathew
    west bend WI
    Vehicle:
    2010 tundra double cab black TRD rock warrior
    3in front leveling kit with camburg engineering upper A-arms, 2in block in the rear and 6 pack leafs, 295/65/17
    I run 44 psi and have been for years and have never had this problem before and brakes are damn neer brand new
     
  9. Mar 13, 2019 at 6:43 PM
    #9
    Woodtickmp

    Woodtickmp [OP] Black beast/beauty/pearl

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    Mathew
    west bend WI
    Vehicle:
    2010 tundra double cab black TRD rock warrior
    3in front leveling kit with camburg engineering upper A-arms, 2in block in the rear and 6 pack leafs, 295/65/17
    I just put a new air filter in until I could clean the k n filter was able to look at one brake caliper but didn't notice it hanging up it feels like somthing is going on in the front diff but not sure. Could plugs and wires really cause gas mileage to drop that much. The last time they were changed was at 100k now it's at 170k.
     
  10. Mar 13, 2019 at 8:21 PM
    #10
    FXFormat

    FXFormat New Member

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    Checked for dragging brake calipers, check air filters, clean the maf sensor, throttle body, and change spark plugs. Winter gas blend will also hurt your MPG also, but 211 is really bad. I get 300 per tank but that's running on fumes and i'm shitting a brick trying to find the nearest gas station
     
  11. Mar 13, 2019 at 8:23 PM
    #11
    Jengel451

    Jengel451 Misanthropist

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    The Bitterroot, MT
    Vehicle:
    2017 Barcelona TRD Limited CrewMax
    3/1.5 Toytec/Icon AAL, 17" Rebounds, 317-70-70 ST Maxx's
    Front diff
     
  12. Mar 14, 2019 at 3:23 AM
    #12
    Woodtickmp

    Woodtickmp [OP] Black beast/beauty/pearl

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    First Name:
    Mathew
    west bend WI
    Vehicle:
    2010 tundra double cab black TRD rock warrior
    3in front leveling kit with camburg engineering upper A-arms, 2in block in the rear and 6 pack leafs, 295/65/17
    I will try cleaning the maf sensor after work today and I'll check the plugs. I was thinking of the front diff because at one point it was almost out of fluid and now it feels like it might be binding in a certain spot but I could be wrong
     
  13. Mar 14, 2019 at 3:27 AM
    #13
    Woodtickmp

    Woodtickmp [OP] Black beast/beauty/pearl

    Joined:
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    Messages:
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    Male
    First Name:
    Mathew
    west bend WI
    Vehicle:
    2010 tundra double cab black TRD rock warrior
    3in front leveling kit with camburg engineering upper A-arms, 2in block in the rear and 6 pack leafs, 295/65/17
    I used to get 330 to 310 depending on how I drive it that's why im not sure I'll definitely look at what you suggested. I did just put a new air filter in on sunday
     
  14. Mar 14, 2019 at 6:35 AM
    #14
    Woodtickmp

    Woodtickmp [OP] Black beast/beauty/pearl

    Joined:
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    #24054
    Messages:
    80
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    First Name:
    Mathew
    west bend WI
    Vehicle:
    2010 tundra double cab black TRD rock warrior
    3in front leveling kit with camburg engineering upper A-arms, 2in block in the rear and 6 pack leafs, 295/65/17
    I forgot to put in the original part of the post that when I'm doing 70mph down a hill and I let off the throttle the truck is doing 60 before I get to the bottom
     
  15. Mar 14, 2019 at 6:38 AM
    #15
    15whtrd

    15whtrd Mr. Blonde

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    SoCal
    Vehicle:
    White 2015 Tundra DC SR5 TRD 4x4 5.7L, White 2003 Sequoia 2WD
    TRD Pro suspension, +2 Coachbuilder shackles, 2015 TRD Pro headlights, 20% ceramic tinted windows, charcoal filter delete, aFe drop in pro s dry air filter, TRD airflow accelerator, TRD oil fill cap, TRD 18 psi radiator cap, BDX Bullydog tuner, Weathertech floor mats front and rear, rear seat fold down mod, Tyger soft tonneau cover, Linex with uv protection, TRD swaybar, TRD center caps, TRD Pro grille insert, aluminum oil filter canister, Real truck tailgate seal, Pop-n-lock tailgate lock actuator, rear diff breather relocate, RCI front skid plate.
    Depending on the decline, it sounds like something is dragging. Diff possibly. Get a infrared thermometer and check your rotars after a drive. They should all be around the same temp.
     
    Jengel451 likes this.
  16. Jan 11, 2021 at 9:22 AM
    #16
    AK-in-MI

    AK-in-MI New Member

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    2015 Platinum Crewmax
    D.A.P. Tune Bilstien 6112/5160 33x12.50xr20 Toyo Open Country M/T 20x9 Fuel Coupler TRD Exhaust
    I am having the same exact issue. I was averaging 300 - 320 miles a tank now with new tires I am under 200.. 9.8 - 10.6 mpg. I have a similar setup. Went from toyo open country mt 33x12.50r20 to Atturo trail blade MT 33x12.50r20 lt. The Atturos are lighter as well. Been a pretty dramatic drop.
     

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