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

MPH Guage off???

Discussion in '2nd Gen. Tacomas (2005-2015)' started by BreezyTaco, Oct 14, 2009.

  1. Oct 14, 2009 at 12:49 PM
    #1
    BreezyTaco

    BreezyTaco [OP] Well-Known Member

    Joined:
    Feb 21, 2009
    Member:
    #13907
    Messages:
    300
    Gender:
    Male
    Corpus Christi, TX
    Pioneer Indash GPS, JL Audio Speakers, FM Alarm, Euro Tail lights, Blue Dash Lights, Trailor Hitch, Painted Fiberglass A.R.E. Tonneau Cover
    I have been driving my Tacoma more often recently, and have noticed that the speed doesnt seem to be correct on the odometer. When I'm going 70 mph everyone is passing me, so I go to 80 and I am just keeping up. In my Toyota Matrix when I do 70, I am passing everybody. My wife and I tested it and it seems to be a 6 mph difference, any suggestions why this is?? Thanks.
     
  2. Oct 14, 2009 at 12:53 PM
    #2
    paintdiddy

    paintdiddy Machine gun shits

    Joined:
    Oct 12, 2008
    Member:
    #9924
    Messages:
    10,307
    Gender:
    Male
    First Name:
    shithead
    nj and not from "the jersey shore"
    Vehicle:
    silver bullet
    did you lift your truck or change tire size???
     
  3. Oct 14, 2009 at 12:59 PM
    #3
    NraFan

    NraFan Join the NRA! Protect your freedom!

    Joined:
    Sep 13, 2009
    Member:
    #22703
    Messages:
    1,568
    Gender:
    Male
    First Name:
    JT
    SoCal
    Vehicle:
    2011 Sienna LE, rockin the mini van!
    Power sliding doors baby! WooHoo!
    I agree, maybe tire size change?
     
  4. Oct 14, 2009 at 1:25 PM
    #4
    JTech

    JTech Well-Known Member

    Joined:
    Feb 22, 2009
    Member:
    #13951
    Messages:
    120
    Gender:
    Male
    Phoenix, Arizona
    Vehicle:
    Silver 09 Double Cab 4x4 Sr5 Off-Road
    Locking Bed Boxes, built in air compressor, Husky Liners(not really a mod but I love them)
    I have an 09 and from day one my speedometer has been off. I asked toyota about it and they said it was within specs. mine isn't as bad as yours though.
     
  5. Oct 14, 2009 at 1:33 PM
    #5
    RelentlessFab

    RelentlessFab Tacoma offroad armor fabricating beast Vendor

    Joined:
    Feb 17, 2008
    Member:
    #4772
    Messages:
    14,194
    Gender:
    Male
    First Name:
    Eric
    Eastern side of the Sierras: Sparks, NV
    Vehicle:
    07 SR5 4x4> 03 SR5 4x4 total> 14 Crewmax TRD
    Had tons on the old Taco's.... new Tundra is pretty stock
    "MPH gauge" :rofl: Dont ya mean the Speedometer?

    Anyways, what size tires are on your truck?
     
  6. Oct 14, 2009 at 2:03 PM
    #6
    flatlander

    flatlander Well-Known Member

    Joined:
    Mar 2, 2009
    Member:
    #14249
    Messages:
    234
    Gender:
    Male
    Vehicle:
    09 DC-LB 2WD Prerunner V6 Auto

    Same here. Mine seems to be about 4% off with the stock 245/75/16 dunflops. If I have done my math correctly, I think if I go to 265/75/16 it will be accurate.
     
  7. Oct 14, 2009 at 2:07 PM
    #7
    BakoTruck

    BakoTruck Well-Known Member

    Joined:
    May 1, 2009
    Member:
    #16674
    Messages:
    2,823
    Gender:
    Male
    First Name:
    Herbie Hancock
    Bakersfield, CA
    Vehicle:
    05 PreRunner TRD
    Mostly stock for now, I have added a cb radio, various cheap mods and I plan on adding aftermarket wheels and other items in the future.
    Why would that be funny? There are a lot of people that call it that, I don't but I am just saying.
     
  8. Oct 14, 2009 at 2:13 PM
    #8
    BakoTruck

    BakoTruck Well-Known Member

    Joined:
    May 1, 2009
    Member:
    #16674
    Messages:
    2,823
    Gender:
    Male
    First Name:
    Herbie Hancock
    Bakersfield, CA
    Vehicle:
    05 PreRunner TRD
    Mostly stock for now, I have added a cb radio, various cheap mods and I plan on adding aftermarket wheels and other items in the future.
    I call it speedometer.
     
  9. Oct 14, 2009 at 2:29 PM
    #9
    RelentlessFab

    RelentlessFab Tacoma offroad armor fabricating beast Vendor

    Joined:
    Feb 17, 2008
    Member:
    #4772
    Messages:
    14,194
    Gender:
    Male
    First Name:
    Eric
    Eastern side of the Sierras: Sparks, NV
    Vehicle:
    07 SR5 4x4> 03 SR5 4x4 total> 14 Crewmax TRD
    Had tons on the old Taco's.... new Tundra is pretty stock
    Never heard it called that before. Just sounded really funny to me.
     
  10. Oct 14, 2009 at 2:34 PM
    #10
    BakoTruck

    BakoTruck Well-Known Member

    Joined:
    May 1, 2009
    Member:
    #16674
    Messages:
    2,823
    Gender:
    Male
    First Name:
    Herbie Hancock
    Bakersfield, CA
    Vehicle:
    05 PreRunner TRD
    Mostly stock for now, I have added a cb radio, various cheap mods and I plan on adding aftermarket wheels and other items in the future.
    I don't blame ya though it does sound kinda weird, it must be a California thing. I just hear some people here in California call it that, I don't.
     
  11. Oct 14, 2009 at 2:43 PM
    #11
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

    Joined:
    May 8, 2008
    Member:
    #6497
    Messages:
    106,156
    Gender:
    Male
    First Name:
    FlimFlubberJAM
    Tenoe, AZ
    Vehicle:
    2013 Rubicon Unlimited,
    4.10 gears, sliders, and lots of buttons.
    I call them the Rev thingy, and the Speed O thingy....
     
  12. Oct 14, 2009 at 2:48 PM
    #12
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

    Joined:
    May 8, 2008
    Member:
    #6497
    Messages:
    106,156
    Gender:
    Male
    First Name:
    FlimFlubberJAM
    Tenoe, AZ
    Vehicle:
    2013 Rubicon Unlimited,
    4.10 gears, sliders, and lots of buttons.
    Yeah....The speedo thingy. :(
     
  13. Oct 14, 2009 at 4:15 PM
    #13
    cspcrx

    cspcrx Well-Known Member

    Joined:
    Aug 24, 2009
    Member:
    #21686
    Messages:
    98
    Gender:
    Male
    Vehicle:
    09 PreRunner Sport TRD
    Mine is off, stock 09 PreRunner Sport. About 2mph at speeds 45 and below and 3-4 at 60mph and above. Checked with GPS after I noticed after we went by a speed board and it didnt match.
    Maybe they just gear them one way and since the trucks have different tire options from the factory it throws it off. Sounds like they picked some kind of middle ground and went with that.
     
  14. Oct 14, 2009 at 4:28 PM
    #14
    navysob

    navysob Carolina Alliance: Virginia Beach and Greenville

    Joined:
    Aug 28, 2007
    Member:
    #2560
    Messages:
    72
    Gender:
    Male
    First Name:
    Sean
    Virginia Beach, VA
    Vehicle:
    09 4x4 SR5
    28/20 Tint, Hood Protector, Vent Visors, 3" AAL's, Front Level Kit, Gas Shocks in the Rear, Tow Hitch, Black Step-Bars, Bull Bar, Off Road Lights
    I have an 09 SR5 4x4 with 245's and i noticed when my speedometer says 80, i am really going only 74. I have tested it with two different GPS Units and a car behind me. I took it into toyota to have them do something about it. And of course there answer for everything, "IT IS IN SPECS".

    Well I had my own fix. I lifted it 3" and put the BFG AT 265/75/16's on it. Well looky here, I am going 80, and everything says 79. I think I can live with a 1 mile difference vs the Toyota's In Spec of 6!!!
     
  15. Oct 14, 2009 at 4:37 PM
    #15
    TACOCRAZY

    TACOCRAZY Active Member

    Joined:
    Jun 1, 2008
    Member:
    #7017
    Messages:
    29
    Sarasota, Florida
    Vehicle:
    07 Prerunner SR5 double cab
    Custom made 15 degree offset t-handle billet aluminum shifter handle, more to come
    Mine is off about 3 mph around 70 (checked with GPS), it says faster than I'm really going, they do have some leeway with the speedo, and 3 mph aggravates me, but I'm more worried about racking up additional miles. If it's off 2 mph at 50 mph than would I show 50,000 miles when i only have 48,000?
     
  16. Oct 14, 2009 at 4:49 PM
    #16
    jtav2002

    jtav2002 Kenny Fuckin Powers

    Joined:
    Jun 29, 2009
    Member:
    #19074
    Messages:
    4,483
    Gender:
    Male
    First Name:
    Josh
    Reading, PA
    Vehicle:
    2013 Tundra DBL Cab TRD OR
    Mine is off as well on my 09 Sport 4x4. There's another thread already about this. Appears to be a widespread problem with the 2009 models and from the other thread IIRC Toyota said they don't have any fix for it. But I'm sure it's technically within specs. Mine is off about 3 or 4 mph at highway speeds. Reads higher than I'm going. Would ahve never noticed if it wasn't for my radar detector which displays your speed via GPS. Also used my GPS and it read the same speed as my radar detector. Not really concerned with it myself.
     
  17. Oct 14, 2009 at 4:54 PM
    #17
    supralight

    supralight Well-Known Member

    Joined:
    Aug 20, 2009
    Member:
    #21479
    Messages:
    674
    Gender:
    Male
    First Name:
    Dan
    Earth
    Vehicle:
    2013 4Runner limited
    stop with the tire size guys! It's the gauge that is reading too high, pretty known fact :). Mine reads 6% too fast.
     
  18. Oct 14, 2009 at 5:09 PM
    #18
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

    Joined:
    May 8, 2008
    Member:
    #6497
    Messages:
    106,156
    Gender:
    Male
    First Name:
    FlimFlubberJAM
    Tenoe, AZ
    Vehicle:
    2013 Rubicon Unlimited,
    4.10 gears, sliders, and lots of buttons.
    Its only the gauge in error. The ODO is pretty close.
     
  19. Oct 14, 2009 at 7:00 PM
    #19
    Terrier

    Terrier Well-Known Member

    Joined:
    Oct 29, 2007
    Member:
    #3288
    Messages:
    223
    Gender:
    Male
    Vehicle:
    2008 SR5 Access Cab 4x4 2.7
    Mine is stock. When I am going 80 mph per the speedometer, the gps shows 75.
     
  20. Oct 14, 2009 at 7:03 PM
    #20
    AzogSS

    AzogSS Well-Known Member

    Joined:
    Aug 26, 2009
    Member:
    #21829
    Messages:
    2,431
    Gender:
    Male
    First Name:
    Andy
    Soda City, SC
    Vehicle:
    2008 Pick-em-up-truck
    Ultimate Tailgate Machine
    My 08 DC is off too, stock tires etc. I noticed the diff of 5-6 mph when using my GPS.
     
To Top