1. Welcome to Tacoma World!

    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 Tacoma discussion topics
    • Communicate privately with other Tacoma owners from around the world
    • Post your own photos in our Members Gallery
    • Access all special features of the site

Gas Mileage??? WTF

Discussion in '1st Gen. Tacomas (1995-2004)' started by bowhunter11199, Nov 22, 2010.

  1. Nov 22, 2010 at 3:32 PM
    #1
    bowhunter11199

    bowhunter11199 [OP] Well-Known Member

    Joined:
    Nov 7, 2010
    Member:
    #45854
    Messages:
    1,019
    Gender:
    Male
    hey guys i've got a lifted 98 3.4l v6 with 33's.it has an magnaflow eshaust with complete K&N cold air intake (see pics). i just figured out the miles per gallon and im get about 8.5 at very best. I'm mostly driving to school and to friends house around town. Very few stop signs. So i was wondering whats going on? Its a manual and i usaully dont shift into 2nd and 3rd untill 2800-3100 rmps and i mostly drive around in 4th doing about 2100 rpms. is it my driving?
     
  2. Nov 22, 2010 at 3:41 PM
    #2
    vantaco

    vantaco Well-Known Member

    Joined:
    Jul 23, 2010
    Member:
    #40631
    Messages:
    500
    Gender:
    Male
    Vehicle:
    02 Taco Xtracab TRD Step Side
    it's the 33's and the v6....but still that's bad

    i'm trying to figure out why i'm only getting 15/16mpg....all stock with 265/75's..auto and a light foot most of the time


    might need a full tune up: filters, spark plugs, cap/rotor...i think those are dist motors not coil packs
     
  3. Nov 22, 2010 at 3:51 PM
    #3
    bowhunter11199

    bowhunter11199 [OP] Well-Known Member

    Joined:
    Nov 7, 2010
    Member:
    #45854
    Messages:
    1,019
    Gender:
    Male
    ya i've be adding those gas addatives that are suppose to clean everything out. and the spark plugs are about 15,000 miles. so i dont know. mabey im a little heavy on the peddle but i drove my dad truck( 2006 f 150 2 in lift 32's v8) and it got about 13-14.
     
  4. Nov 22, 2010 at 4:50 PM
    #4
    YotaDan

    YotaDan Dan Vendor

    Joined:
    Apr 1, 2009
    Member:
    #15461
    Messages:
    2,227
    Gender:
    Male
    First Name:
    Dan
    Oregon
    You may have an exhaust or intake leak. Anything that could cause the O2 to read lean will cause poor mileage.
     
  5. Nov 22, 2010 at 5:14 PM
    #5
    bowhunter11199

    bowhunter11199 [OP] Well-Known Member

    Joined:
    Nov 7, 2010
    Member:
    #45854
    Messages:
    1,019
    Gender:
    Male
    so any ideas. like places/ things to check. or should i take it into the stealership or local auto store?
     
  6. Nov 22, 2010 at 5:19 PM
    #6
    YotaDan

    YotaDan Dan Vendor

    Joined:
    Apr 1, 2009
    Member:
    #15461
    Messages:
    2,227
    Gender:
    Male
    First Name:
    Dan
    Oregon
    Check for exhaust leaks before or close to the O2 sensor. But you may need to take it in so they can hook up a scantool and watch the readings.
     
  7. Nov 22, 2010 at 5:31 PM
    #7
    bowhunter11199

    bowhunter11199 [OP] Well-Known Member

    Joined:
    Nov 7, 2010
    Member:
    #45854
    Messages:
    1,019
    Gender:
    Male
    ill go through and change some stuff and see if it helps out but if i take it in do you have any idea what it would cost for them to figure out whats wrong/ fix it?
     
  8. Nov 22, 2010 at 7:41 PM
    #8
    twfsa

    twfsa Well-Known Member

    Joined:
    May 29, 2010
    Member:
    #37997
    Messages:
    1,342
    Gender:
    Male
    First Name:
    Tom
    Omaha Ne
    Vehicle:
    04 TRD 4X4
    881 Front coils, Bilstien 5100's all the way front set to "0" Icon Dynamic's mini leafs in rear, stock tires.
    Keep your foot out of it, stock tires on mine in town 17.6-18.2 all city and I keep it as close to 2k rpms as possible. I expect that to drop a little as the weather gets colder.
     
  9. Nov 26, 2010 at 9:30 PM
    #9
    bowhunter11199

    bowhunter11199 [OP] Well-Known Member

    Joined:
    Nov 7, 2010
    Member:
    #45854
    Messages:
    1,019
    Gender:
    Male
    i have tried shifting into 2nd in 2000 rpm its kinds jerky and it puts a lot of strain on the motor (and slow exceleration) cuz i still have stock gear ratio(4.10) but i dont think shifting a 3k rpms isnt that bad it would drop me to 8-9 mpg
     
  10. Nov 27, 2010 at 6:05 AM
    #10
    RAT PRODUCTS

    RAT PRODUCTS RAT Products

    Joined:
    Apr 12, 2010
    Member:
    #35140
    Messages:
    13,769
    Gender:
    Male
    First Name:
    Ryan
    Farmington, MN
    Vehicle:
    01 CUMTOY and 16 Sierra Denali
    View the build. Too much to list.
    Did you get your odometer calibrated after your tire upgrade? It wouldn't be off by much, but it would affect your mileage if you've gone father than it reads.

    I hotrod in my truck and it still gets 12-14 in town. It's stock with exhaust but that shouldn't matter too much.
     
  11. Nov 27, 2010 at 11:54 AM
    #11
    crazyasu45

    crazyasu45 Well-Known Member

    Joined:
    May 14, 2009
    Member:
    #17241
    Messages:
    707
    Gender:
    Male
    First Name:
    Matt
    Canada
    Vehicle:
    2013 MGM DCLB 4X4 TRD SPORT
    3" SUSPENSION LIFT
    I also have a lifted 98 V6 3.4L w/33's and this is what I get:

    City 12mpg
    Hwy 16mpg
     
  12. Nov 27, 2010 at 2:03 PM
    #12
    ricktaco

    ricktaco Active Member

    Joined:
    Dec 17, 2009
    Member:
    #27726
    Messages:
    30
    Gender:
    Male
    Oregon
    Vehicle:
    96 Tacoma 4x4
    Wow, this makes me think something is wrong with your truck. I have a 4x4 V6 96 model and I get 20 mpg in town. Don't drive on the highway so no idea what that would be.

    I run 31's but 33's can't hurt mileage THAT much.

    Maybe take it in and have it put on a diagnostic system to see if they can determine what's going on.
     
  13. Nov 27, 2010 at 7:43 PM
    #13
    crazyasu45

    crazyasu45 Well-Known Member

    Joined:
    May 14, 2009
    Member:
    #17241
    Messages:
    707
    Gender:
    Male
    First Name:
    Matt
    Canada
    Vehicle:
    2013 MGM DCLB 4X4 TRD SPORT
    3" SUSPENSION LIFT
    I might have done my calculations wrong...I'll track a couple fill ups on fuelly.com and post the results...
     
  14. Nov 28, 2010 at 8:02 AM
    #14
    1welder

    1welder Well-Known Member

    Joined:
    Jun 15, 2010
    Member:
    #38997
    Messages:
    64
    Gender:
    Male
    First Name:
    tony grace
    edgewood, tx.
    Vehicle:
    98' ext. cab
    toytec coilovers, bil 5100's, dakar leafs, e-locker rear,aussie front, 4x innovations sliders,cooper stt's 32x11.5x15, max 4 marathon seat covers,
    i also have a 98' with 3.4 w/32's. my truck never sniffs 3000 rpms and all i get is 14mpg. sea foamed it about a month ago with no real results i dont think. plugs probably got 10000 miles on them, air filter is clean. i cleaned the MAF about 5000 miles ago. has anybody replaced the O2 sensors with good results?, wanted to ask before i did it because they are a little pricey.
     
  15. Nov 28, 2010 at 8:22 AM
    #15
    shitroc

    shitroc Master of War

    Joined:
    Oct 14, 2009
    Member:
    #24315
    Messages:
    1,406
    Gender:
    Male
    First Name:
    Ant
    New Brunswick, Canada
    Vehicle:
    2002 Tacoma TRD 4X4
    Listed in sig.......
    my gas mileage barely changed at all from the stock size tires to 285's. it isnt ur driving, i shift at 3k for every gear. u could try removing your o2 sensors and giving them a cleaning before replacing them,since theyre fairly expensive.
     
  16. Nov 28, 2010 at 8:49 AM
    #16
    sctrdtaco03

    sctrdtaco03 Ah yeah that guy

    Joined:
    Dec 27, 2009
    Member:
    #28228
    Messages:
    56
    Gender:
    Male
    First Name:
    scott
    Port Orchard,Wa
    Vehicle:
    Taco
    first gen trd supercharger throttle body coolant delete gray wire mod rear diff breather extension King coilovers All pro uca's toytec 2" shackle extension rear billy 5100 water meth injection urd 6 injector upgrade other assorted goodies custom AZ pinstripe on sides
    I would go with a vacuum leak or exhaust leak I have 33's and a s/c and have a lead foot and get around 15mpg average.

    Spray carb cleaner around your vacuum lines see if the rpms change then look close at your exhuast see if there is black soot around a crack or anything. Besides that it could be a sensor throwing a lean condition in. just my 2 cents
     
  17. Dec 1, 2010 at 6:33 PM
    #17
    crazyasu45

    crazyasu45 Well-Known Member

    Joined:
    May 14, 2009
    Member:
    #17241
    Messages:
    707
    Gender:
    Male
    First Name:
    Matt
    Canada
    Vehicle:
    2013 MGM DCLB 4X4 TRD SPORT
    3" SUSPENSION LIFT
    20 mpg City!!! that's amazing...You've well exceeded 15 mpg Edmunds specs...

    http://www.edmunds.com/used/2002/toy...156/specs.html
     
  18. Dec 1, 2010 at 7:00 PM
    #18
    ricktaco

    ricktaco Active Member

    Joined:
    Dec 17, 2009
    Member:
    #27726
    Messages:
    30
    Gender:
    Male
    Oregon
    Vehicle:
    96 Tacoma 4x4
    I only checked it once. Need to check it a few times to be certain. I do drive like a little old lady from Pasadena though.
     
  19. Dec 1, 2010 at 10:14 PM
    #19
    Flash1034

    Flash1034 Well-Known Member

    Joined:
    Oct 29, 2010
    Member:
    #45429
    Messages:
    73
    Gender:
    Male
    Southern California
    Vehicle:
    2003 SR5 TRD 4x4 Extracab 3.4 liter
    None
    How do you adjust the speedo. Mine seems to read low.

    Flash
     
  20. Dec 1, 2010 at 10:27 PM
    #20
    Digiratus

    Digiratus Adventurer

    Joined:
    Mar 26, 2010
    Member:
    #34006
    Messages:
    13,713
    Gender:
    Male
    First Name:
    Mike
    Roaming the PNW
    Vehicle:
    The RedHead
    2002 XtraCab TRD 4x4 Auto Trans With Lots of Mods King Extended Travel COs Camburg Uniball UCAs Alcan Custom 8-Leaf Rear Spring Packs Fox 2.0 Resi Rear Shocks FrankenFab Rear Shock Relocate All-Pro U-bolt Flip w/Timbren bumps Toytec 1" Extended Shackle 4.88 Nitro Gears ARB Front Locker ARB Twin Compressor 15x8 D Window Steelies 33" BFG KM2s Limited Edition Relentless Front Bumper Smittybilt X2O 10K Winch Rugged Ridge 3" LED Pods w/Amber covers Mini D2S Projectors XB35 Ballasts + 4500K Bulbs Badland Sliders FrankenFab Tire Carrier Swingout bumper w/kitchen BudBuilt Front & Bellypan Skids BAMF Rear Diff Skid Whynter 65 qt. Fridge/Freezer CVT Mt Bachelor RTT Badland Custom Bed Rack GM 140 amp alternator Dual Northstar 24F AGM batteries BlueSea 7622 ML-ACR Battery controller Peak DBI Dual Battery Voltage Monitor Magnaflow 18" Muffler Braided Steel Brake Lines AFE Pro Dry S air filter ScanGauge II OBDII Scanner Kenwood TM-71A Dual Band Ham Radio Larson 70CM/2M Antenna Uniden 520xl CB radio 3' Firestik Adjustable tip antenna Pioneer DEH-P9400BH HU Alpine Amps & Type R components (F) and coaxials (R) Wet Okole Seat Covers Weathertech Digital Liners Deck Plate Mod 1" Diff Drop Carrier Bearing Drop
    Its not like the old days where you had speedo cable coming out of the back of the tranny. Its all fly by wire now.

    There is no way to adjust the speedometer/odometer in our trucks.
     
To Top