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gas mileage WTF?

Discussion in '2nd Gen. Tacomas (2005-2015)' started by kessler89, Oct 16, 2010.

  1. Oct 16, 2010 at 10:23 PM
    #1
    kessler89

    kessler89 [OP] Well-Known Member

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    so today was the first time i figured up my mileage on my truck, i just got it a week or so ago

    06 4x4 AC trd sport with a auto trans

    15mpg!?!?!? i dont drive it hard and i'd say that 90% of my drive to work is in the country with very little city driving, truck is bone stock with 70k mi

    i just changed the airfilter, removed the 2nd filter, cleaned the MAF and TB, my TB was pretty dirty, especially on the back side, and i put new ngk iridiums in it today, you guys think this stuff might help it some? anything else i can do lol?
     
  2. Oct 16, 2010 at 10:25 PM
    #2
    ktmrider

    ktmrider Senior Member

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    try synthetic oil as well if you arnt already
     
  3. Oct 16, 2010 at 10:27 PM
    #3
    kessler89

    kessler89 [OP] Well-Known Member

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    that's next on the list, dealer i bought it from just changed the oil in it so i figured i'd just run it but i dont like knowing what kind of oil is in there, i'm sure it wont stay very long
     
  4. Oct 16, 2010 at 10:28 PM
    #4
    ktmrider

    ktmrider Senior Member

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  5. Oct 16, 2010 at 10:30 PM
    #5
    Juggernaut

    Juggernaut Captain

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    Type and size of tire, avg speed on highway seem to make the biggest difference. Your truck is rated 16/20, give it another tank and see how u do, maybe the first gas pump shut off early so it didn't fill up the tank all the way.
     
  6. Oct 16, 2010 at 10:47 PM
    #6
    luk8272

    luk8272 Poodoo

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    5% Tint, Bug flector, vent Visors, Removed secondary air filter, Rear Spring TSB w/ Wheeler's Add A Leaf HD Pack, Icon 2.0 rear shocks, Toytec 3" lift up front with Total Chaos UCA's, Debadged, Billet Grille,TRD Offroad rims/17x9 Pro comp 6001 rims, Duratracs 265/75/16 or 285/70/17, Fog light anytime mod, Tailgate hose clamp mod, Pro-dry AFE filter. Extended Differential Breather, ABS on/off, 6000k LEDs from CSJumper, heads/fogs, ScanguageII, Devil horns, Devil horns on third brake light, Mounted 60" Highlift, Mounted Tool Box, Wet Okole Front/Rear Seat Covers, TW sticker, Midland Handheld CB,Painted engine cover, Revenge Fab Sliders, ARE Topper, Weather tech Floorliners.
    I know you said the truck was bone stock, so I'm just double checking on tire size.
    With 70k miles I would expect better than that. Mine keeps improving, however I haul and push its limits on a regular basis which keeps my mpg pretty low. But on longer trips the improvements are noticeable.
     
  7. Oct 16, 2010 at 10:59 PM
    #7
    yamaha73

    yamaha73 Well-Known Member

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    285/65/18 nitto trail grapplers w/ xd revolvers, second air filter removed, k&n drop in, maxtrack spindle, pro comp aal, 20% tint all around, ebay halos,rigid industries led lights behind my satoshi kenwood shallow mount subwoofer in custom box, kenwood stereo, black lower valence, plus my custom cracked windshield
    i did the math today and im getting 14.8mpg on my 08 access cab with 285s, i get on the gas kinda hard when taking off but most of the time i try to ease on it, and still i dont seem to get much better, my truck has almost 70,000 miles on it and i always run fully synthetic oil, is there anything i need to clean or do since ive got 70,000 miles?
     
  8. Oct 16, 2010 at 11:01 PM
    #8
    Leadgolem

    Leadgolem Well-Known Member

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    Maybe the MAF sensor, or throttle body. That is if your air filter is clean. Not a bad idea to get a can of seafoam either.
     
  9. Oct 16, 2010 at 11:06 PM
    #9
    yamaha73

    yamaha73 Well-Known Member

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    285/65/18 nitto trail grapplers w/ xd revolvers, second air filter removed, k&n drop in, maxtrack spindle, pro comp aal, 20% tint all around, ebay halos,rigid industries led lights behind my satoshi kenwood shallow mount subwoofer in custom box, kenwood stereo, black lower valence, plus my custom cracked windshield
    ok thanks, wheres the MAF sensor, lol sorry kinda new too it, and how do u clean that and the throttle body? like wat do u use, and yea i clean my air filter pretty much at every oil change, and seafoam? wow i feel like a noob haha
     
  10. Oct 16, 2010 at 11:28 PM
    #10
    Leadgolem

    Leadgolem Well-Known Member

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    The throttle body is the valve for air you open when you press on the throttle. It should be a metal piece about 1 1/2 inches wide between your air filter and all the pipes that then feed into your engine. The MAF, mass air flow sensor, you should have a wire going to a plug very near your throttle body. You'll need a can of MAF cleaner for that. You don't want to touch the sensor as any oil, including body oil, can mess it up. You take the MAF out and spray it with the can of cleaner.

    Seafoam is a product that helps remove engine deposits and unclog your injectors. I'm not sure where it's at on a second gen, but you would follow the directions here. http://www.seafoamsales.com/how-to-use-sea-foam-motor-treatment.html#nogo for fuel injection. Here's the thread on it. http://www.tacomaworld.com/forum/1st-gen-tacomas/63790-seafoam.html There is probably one for second gen's but I haven't looked.
     
  11. Oct 16, 2010 at 11:36 PM
    #11
    yamaha73

    yamaha73 Well-Known Member

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    285/65/18 nitto trail grapplers w/ xd revolvers, second air filter removed, k&n drop in, maxtrack spindle, pro comp aal, 20% tint all around, ebay halos,rigid industries led lights behind my satoshi kenwood shallow mount subwoofer in custom box, kenwood stereo, black lower valence, plus my custom cracked windshield
    o ok cool thanks alot, how can i clean the throttle body?
     
  12. Oct 16, 2010 at 11:40 PM
    #12
    grunt66

    grunt66 Well-Known Member

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    I have a 2008 Tacoma 6cyl 4X4 DC off road with stock tires and the best I have ever achieved was 19mpg on the highway and I average 17mpg. I am located in California. When I achieved 19mpg I really watched how I was driving (light on the gas, 55mph on the highway).
     
  13. Oct 17, 2010 at 12:13 AM
    #13
    Tidrow

    Tidrow Well-Known Member

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    I did the same thing when I first got mine. You'll learn how to drive it more efficient.
     
  14. Oct 17, 2010 at 12:20 AM
    #14
    Juggernaut

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    FYI, if you have larger tires you have to adjust for that, 285 tires means your odometer is ~7-8% off, so you actually are getting 7-8% better mpg. Still shitty, but better.
     
  15. Oct 17, 2010 at 12:24 AM
    #15
    Rocko

    Rocko Active Member

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    Check your tire pressures. I tenf to run mine towards the max pressure ,maybe at the risk of early uneven wear, but it is better for the mpg..
     
  16. Oct 17, 2010 at 3:17 AM
    #16
    dalsmthme

    dalsmthme Well-Known Member

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    Give it time to break in. My '09 started at the same point you are at. Now I have 14k on it and I averaged 19-20mpg all summer in mixed driving.
     
  17. Oct 17, 2010 at 4:38 AM
    #17
    MT Madman

    MT Madman Senior Citizen

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    Not sure if it works on a Toyota or not but pull the battery cable off for a half hour or so, that way the computer will reset to default and then learn your driving habits.

    My brother used to be a master mechanic for GM and recommends to do this with all used vehicles. Also I had to do this when I moved from the flat lands of Indiana (600') to the high prairie of Great Falls Montana (3600') above sea level.
     
  18. Oct 17, 2010 at 6:54 AM
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    luk8272

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    He's right, don't forget to add that percentage to your miles driven before you divide by the gallons. For me I drove 268 miles, according to the Odom, I have to do as follows

    268x1.0741=287.8588 Miles driven, divided by 15.835gal=18.178mpg
     
  19. Oct 17, 2010 at 7:08 AM
    #19
    dog tired

    dog tired Well-Known Member

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    At best it will improve only 2-4 MPG

    get used to it
     
  20. Oct 17, 2010 at 7:10 AM
    #20
    justin14200

    justin14200 frequent reader

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    take the iridium plugs out, thats probobly the biggest problem.

    iridium plugs are for high compression motors as they burn hotter. with iridium plugs in your motor your fuel is acting like a diesel fuel where the pressure in the combustion chamber is preigniting your fuel and you are getting poor gas mileage because the computer thinks the motor is working the way its supposed to.

    we get tons of complaints about the same thing at work, we always change the plugs back to a factory or factory equivelent plug, it works every time


    try it and see what happens
     
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