1. Welcome to 4Runners.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 4Runner discussion topics
    • Transfer over your build thread from a different forum to this one
    • Communicate privately with other 4Runner owners from around the world
    • Post your own photos in our Members Gallery
    • Access all special features of the site

Gas mileage 12 miles per gallon whats up with this 1999 4runner 3.4 V6 4wd AT

Discussion in '3rd Gen 4Runners (1996-2002)' started by elwooddrippin, Dec 20, 2017.

  1. Dec 20, 2017 at 11:35 AM
    #1
    elwooddrippin

    elwooddrippin [OP] New Member

    Joined:
    Sep 20, 2017
    Member:
    #4795
    Messages:
    5
    Gender:
    Male
    First Name:
    rob
    Vehicle:
    1999 4runner
    Vehicle Modifications:
    0
    Just bought this a few months ago and was wondering why the fuel mileage seemed so poor runs great real peppy start great idles great no lights on have just be doing city driving in 2WD tires are 265/70/R16 LTX any ideas or is this normal also don't smell fuel thanks
     
  2. Dec 20, 2017 at 11:56 AM
    #2
    jester243

    jester243 rabble rabble rabble

    Joined:
    Jul 13, 2016
    Member:
    #2304
    Messages:
    1,131
    Gender:
    Male
    First Name:
    Dan
    Spokane, WA
    Vehicle:
    2016 4Runner Trail Premium w/ KDSS
    not sure where your located but colder weather nukes my mileage every year, also when is the last time you changed plugs and filters?
     
  3. Dec 20, 2017 at 1:34 PM
    #3
    elwooddrippin

    elwooddrippin [OP] New Member

    Joined:
    Sep 20, 2017
    Member:
    #4795
    Messages:
    5
    Gender:
    Male
    First Name:
    rob
    Vehicle:
    1999 4runner
    Vehicle Modifications:
    0
    did air filter fast and easy no change
     
  4. Dec 20, 2017 at 4:43 PM
    #4
    jester243

    jester243 rabble rabble rabble

    Joined:
    Jul 13, 2016
    Member:
    #2304
    Messages:
    1,131
    Gender:
    Male
    First Name:
    Dan
    Spokane, WA
    Vehicle:
    2016 4Runner Trail Premium w/ KDSS
    also how are you figuring your mileage, you're dividing miles driven by gallon right, and are the tires stock sized or larger, that can throw it off as well. When you say you changed the air filter how long ago, also the plugs? and is it really cold where you are?
     
  5. Dec 22, 2017 at 7:30 AM
    #5
    Texoma

    Texoma IG: @cwehlin

    Joined:
    May 6, 2017
    Member:
    #4006
    Messages:
    248
    Gender:
    Male
    First Name:
    ChrisTopher
    Lago Vista, TX
    Vehicle:
    13 T4R
    Just bought dat bish
    Lots of factors involved that can create poor gas mileage. Maybe list all of the add ons you have on the vehicle, a list of maintenance items that you've done recently, and a list of maintenance items that you've done previously and how long ago.
     
  6. Dec 22, 2017 at 5:22 PM
    #6
    elwooddrippin

    elwooddrippin [OP] New Member

    Joined:
    Sep 20, 2017
    Member:
    #4795
    Messages:
    5
    Gender:
    Male
    First Name:
    rob
    Vehicle:
    1999 4runner
    Vehicle Modifications:
    0
    thanks there is lots of good info on line on how to improve the gas mileage
     
  7. Dec 22, 2017 at 6:01 PM
    #7
    SnowroxKT

    SnowroxKT New Member

    Joined:
    Dec 11, 2017
    Member:
    #5149
    Messages:
    116
    Gender:
    Male
    First Name:
    Kyle
    Alaska
    Vehicle:
    2018 T4R TRD Offroad
    2018 T4R Offroad SAS 1995 Tacoma
    If you really romp it around town and never go on the highway what would you expect it to get?

    Basic maintenance, changing all fluids to a synthetic, and driving like you want to get good mileage always seemed to help me.
     
    Last edited: Dec 22, 2017
  8. Dec 22, 2017 at 6:11 PM
    #8
    elwooddrippin

    elwooddrippin [OP] New Member

    Joined:
    Sep 20, 2017
    Member:
    #4795
    Messages:
    5
    Gender:
    Male
    First Name:
    rob
    Vehicle:
    1999 4runner
    Vehicle Modifications:
    0
    you would think at least in the high teens considering i have own V8's in way heavier cars and trucks and ran them way harder and ended up getting 12mpg
     
  9. Dec 22, 2017 at 6:14 PM
    #9
    SnowroxKT

    SnowroxKT New Member

    Joined:
    Dec 11, 2017
    Member:
    #5149
    Messages:
    116
    Gender:
    Male
    First Name:
    Kyle
    Alaska
    Vehicle:
    2018 T4R TRD Offroad
    2018 T4R Offroad SAS 1995 Tacoma
    Yeah Toyota trucks just because they don't have a V8 do no get great mileage when you romp on them. I have the 4 cylinder in my Tacoma and don't get good mileage at all. I do drive it hard and it is a lot heavier than stock, and has a solid axle under it though. :burnrubber:
     
  10. Dec 22, 2017 at 6:22 PM
    #10
    elwooddrippin

    elwooddrippin [OP] New Member

    Joined:
    Sep 20, 2017
    Member:
    #4795
    Messages:
    5
    Gender:
    Male
    First Name:
    rob
    Vehicle:
    1999 4runner
    Vehicle Modifications:
    0
    whoa there u go i thought i should of got a 4 cylinder if i wanted good mileage yup run it hard have some fun it's going to cost u anyway
     
  11. Apr 28, 2018 at 1:40 PM
    #11
    Wht4x2

    Wht4x2 New Member

    Joined:
    Mar 14, 2016
    Member:
    #1714
    Messages:
    13
    Gender:
    Male
    Vehicle:
    Stock 2000 SR5 2WD
    Running boards removed, B&M 70268 trans cooler, Energy Suspension rack bushings & front/rear sway bar/end link bushings, led dome lights. DIY roof rack out of Superstrut.
    Take your mass air flow sensor out and clean it with MAF Sensor cleaner as instructed on the can.

    Could also try injector cleaner (Lucas or other) in your next full tank of gas.

    I have gotten no lower than 18 mpg, so 12 is pretty bad unless you have bigger tires etc.
     
    BTB1987 likes this.
  12. May 15, 2018 at 10:40 PM
    #12
    2015usrybch

    2015usrybch New Member

    Joined:
    May 15, 2018
    Member:
    #6041
    Messages:
    3
    Gender:
    Male
    First Name:
    Ross
    I had (sold it last week:( going to get another one soon) a 1999 4x4 Manual 3.4 v6 4Runner with 285/70r17 (33's) on it and as jester243 said, depending on where and how much the temperature drops, that really affects your gas mileage. During the summer here in Seattle I got around 17ish mpg but as soon as cold weather hit, it dropped down to 12mpg.

    It sucked but I didn't mine fillin her up since I loved it so much.
     
    Last edited: May 15, 2018
  13. Jun 1, 2018 at 8:44 AM
    #13
    SurfLocc

    SurfLocc New Member

    Joined:
    Mar 17, 2018
    Member:
    #5677
    Messages:
    32
    Gender:
    Male
    First Name:
    Leo
    Vehicle:
    1999 Silver 4Runner
    Bone stock
    I purchased a 99 4runner 4 cylinder because of gas and it still sucks Haha i couldn’t imagine the V6. These trucks just aren’t good on gas.
     

Products Discussed in

To Top