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
    Quick Links: Did I order the correct rear KINGS? 1GRFE Harmonic Balancer installation Gear Oil Question for rear Diff Front and Rear Differential Fluids TPMS advice Verify my rotor and pad purchase please

MPG worse after tuneup

Discussion in '2nd Gen. Tacomas (2005-2015)' started by patos tacoma, Dec 16, 2020.

Page 3 of 4
  1. Dec 19, 2020 at 9:44 AM
    #41
    TexasWhiteIce

    #41
    TexasWhiteIce Well-Known Member

    Joined:
    Sep 12, 2010
    Member:
    #43160
    Messages:
    5,345
    Gender:
    Male
    Texas
    Vehicle:
    2022 White DCLB SR5 - Blackout
    Check tire air pressure. I bet you’re driving on summer air. Winter air needs to be used in tires during the winter in order to achieve maximum gas mileage.
     
    TexasWhiteIce, Dec 19, 2020
    #41
    Jacked Burton and Jimmyh like this.
  2. Dec 19, 2020 at 10:34 AM
    #42
    will.i.was

    #42
    will.i.was Well-Known Member

    Joined:
    May 6, 2018
    Member:
    #252688
    Messages:
    1,705
    Gender:
    Male
    First Name:
    Will
    Houston, Texas
    Vehicle:
    SC 2.5
    oh I believe it haha. I commute mostly 59/99/i-10/sw bw8. Traffic moves decently. Plenty of drivers driving under speed limit on left. Houston is a frustrating place to drive lol
     
    will.i.was, Dec 19, 2020
    #42
    Thatbassguy likes this.
  3. Dec 19, 2020 at 11:54 AM
    #43
    patos tacoma

    #43
    patos tacoma [OP] Well-Known Member

    Joined:
    Jun 18, 2020
    Member:
    #331792
    Messages:
    573
    Gender:
    Male
    Previous owner records show a TB cleaner performed by a Toyota dealer 20k ago.....
    How deep do you think the dealer goes.....just a little spray?
    And how long do you think it will last......how often do TACO owners clean TBs?
     
    patos tacoma, Dec 19, 2020
    #43
  4. Dec 19, 2020 at 11:56 AM
    #44
    patos tacoma

    #44
    patos tacoma [OP] Well-Known Member

    Joined:
    Jun 18, 2020
    Member:
    #331792
    Messages:
    573
    Gender:
    Male
    While warmer/summer air might be lighter, than winter/colder air......tire psi is about pressure and the right psi listed on the door frame is year around.
     
    patos tacoma, Dec 19, 2020
    #44
  5. Dec 19, 2020 at 2:08 PM
    #45
    spitdog

    #45
    spitdog Well-Known Member

    Joined:
    Sep 2, 2014
    Member:
    #137440
    Messages:
    3,995
    Gender:
    Male
    Vehicle:
    2015 Access Cab V6 4x4 SR5 MGM
    I would guess the average Tacoma owner never cleans the MAF & TB let alone even know what it is.
     
    spitdog, Dec 19, 2020
    #45
  6. Dec 19, 2020 at 3:58 PM
    #46
    JL8Jeff

    #46
    JL8Jeff Well-Known Member

    Joined:
    Feb 6, 2018
    Member:
    #243662
    Messages:
    984
    First Name:
    Jeff
    Ewing, NJ
    Vehicle:
    2013 Tacoma reg cab
    OME 885/nitros, SPC UCA, 305/65/17, AAL
    Here's my last 9 fillups and the mpg. You can tell when the winter gas shows up even with warmer air. When you add really cold air and longer warmups it drops even more (this is also because tire air pressure drops in colder weather). Most of my driving is around town and rarely above 45 mph but there are a couple of longer trips with 60-65 mixed in.
    16.373
    17.212
    16.864
    19.948 (this was mostly highway with some stop lights mixed in)
    17.358
    17.125
    19.623 (this was a run to the beach so more highway with beach traffic mixed)
    15.728
    15.335

    Edit: Definitely check your tire pressure this time of year. We got down to 9 degrees the other night and today I checked and mine were at 26.5 lbs so I pumped them up to 33. That will affect your mpg just like the winter gas and colder air.
     
    Last edited: Dec 20, 2020
    JL8Jeff, Dec 19, 2020
    #46
  7. Dec 19, 2020 at 5:40 PM
    #47
    patos tacoma

    #47
    patos tacoma [OP] Well-Known Member

    Joined:
    Jun 18, 2020
    Member:
    #331792
    Messages:
    573
    Gender:
    Male
    78501AB2-5B6F-4133-BB9A-F2F5FC52BADE.jpg 78501AB2-5B6F-4133-BB9A-F2F5FC52BADE.jpg
    This is what came off my TB cleaning today. Dealer “cleaned it”
    15K ago
    Less than an hour. 1/2 can of CRC TB spray. ($8) And took care of of MAF while I was at it CRC MAF spray

    Then reset computer 8 minutes idling

    hope it makes a difference
     
    patos tacoma, Dec 19, 2020
    #47
    Island Cruiser and ABA180 like this.
  8. Dec 19, 2020 at 5:53 PM
    #48
    ABA180

    #48
    ABA180 It burns when I pee....

    Joined:
    Oct 8, 2012
    Member:
    #88520
    Messages:
    24,931
    Gender:
    Male
    First Name:
    Chris
    East Bridgewater MA
    Vehicle:
    2010 Tacoma Regular Cab Slider
    Pioneer CD, Megaloud/JBL amps, Rockford/Polk speakers.
    They could well have cleaned it, but that was then this is now. Definitely a wise idea though
     
    ABA180, Dec 19, 2020
    #48
    Island Cruiser likes this.
  9. Dec 20, 2020 at 1:11 AM
    #49
    No Shoes Nation

    #49
    No Shoes Nation Well-Known Member

    Joined:
    Sep 20, 2019
    Member:
    #305845
    Messages:
    906
    Gender:
    Male
    Vehicle:
    2008 Taco SR5 Access Cab 4.0 4x4
    Hmm . . . none as yet, that's why i'm here . . .
    What this really comes down to is you drive a dang truck, you want gas mileage get a Prius
     
    No Shoes Nation, Dec 20, 2020
    #49
  10. Dec 20, 2020 at 5:38 AM
    #50
    TexasWhiteIce

    #50
    TexasWhiteIce Well-Known Member

    Joined:
    Sep 12, 2010
    Member:
    #43160
    Messages:
    5,345
    Gender:
    Male
    Texas
    Vehicle:
    2022 White DCLB SR5 - Blackout
    It’s because half the cars have paper plates .....
     
    TexasWhiteIce, Dec 20, 2020
    #50
    will.i.was[QUOTED] likes this.
  11. Dec 20, 2020 at 5:54 AM
    #51
    Icarus II

    #51
    Icarus II Well-Known Member

    Joined:
    Mar 20, 2019
    Member:
    #287241
    Messages:
    661
    Gender:
    Male
    First Name:
    Keith
    Southeast Pa.
    Vehicle:
    2007 Prerunner SR5
    unless you have replaced the tires with something different than stock, then read the sidewall.
     
    Icarus II, Dec 20, 2020
    #51
  12. Dec 20, 2020 at 7:16 AM
    #52
    Thatbassguy

    #52
    Thatbassguy Sweet or sour?

    Joined:
    Mar 17, 2018
    Member:
    #247525
    Messages:
    10,977
    Gender:
    Male
    First Name:
    James
    Vehicle:
    '19 T4R, TRDORP, KDSS
    RSG sliders, SOS skids, SOS bumper, wheels, tires, etc
    If you are suggesting that people should run the maximum inflation listed on the tire, that is incorrect.

    The tire pressure listed on the door is based on GAWR and should be followed unless the tires are replaced with a different sized and/or load range. In that case, the tire pressure calculator linked earlier in this thread can be used to find the proper pressure for their new tires.
     
    Thatbassguy, Dec 20, 2020
    #52
  13. Dec 20, 2020 at 4:16 PM
    #53
    Icarus II

    #53
    Icarus II Well-Known Member

    Joined:
    Mar 20, 2019
    Member:
    #287241
    Messages:
    661
    Gender:
    Male
    First Name:
    Keith
    Southeast Pa.
    Vehicle:
    2007 Prerunner SR5
    Other tires besides stock may be rated differently.
     
    Icarus II, Dec 20, 2020
    #53
  14. Dec 20, 2020 at 4:44 PM
    #54
    patos tacoma

    #54
    patos tacoma [OP] Well-Known Member

    Joined:
    Jun 18, 2020
    Member:
    #331792
    Messages:
    573
    Gender:
    Male
    That’s NOT what I wrote about......it was about getting LESS MPG after spark plug, Coil reburbish, PCV change......MPG should have IMPROVED on “the dang truck”.
     
    patos tacoma, Dec 20, 2020
    #54
    Thatbassguy likes this.
  15. Dec 20, 2020 at 4:49 PM
    #55
    Thatbassguy

    #55
    Thatbassguy Sweet or sour?

    Joined:
    Mar 17, 2018
    Member:
    #247525
    Messages:
    10,977
    Gender:
    Male
    First Name:
    James
    Vehicle:
    '19 T4R, TRDORP, KDSS
    RSG sliders, SOS skids, SOS bumper, wheels, tires, etc
    If they are stock size and rating, you use the door sticker. Any other size and rating can be adjusted properly using a calculator. You don't ever use the max inflation stamped on the tire. That will lead to improper wear and possible other problems.

    Once again:
     
    Thatbassguy, Dec 20, 2020
    #55
    patos tacoma[OP] likes this.
  16. Dec 21, 2020 at 4:02 AM
    #56
    Icarus II

    #56
    Icarus II Well-Known Member

    Joined:
    Mar 20, 2019
    Member:
    #287241
    Messages:
    661
    Gender:
    Male
    First Name:
    Keith
    Southeast Pa.
    Vehicle:
    2007 Prerunner SR5
    Who said anything about max. Inflation? I’m done with this. Have a nice day.
     
    Icarus II, Dec 21, 2020
    #56
  17. Dec 21, 2020 at 4:46 AM
    #57
    Thatbassguy

    #57
    Thatbassguy Sweet or sour?

    Joined:
    Mar 17, 2018
    Member:
    #247525
    Messages:
    10,977
    Gender:
    Male
    First Name:
    James
    Vehicle:
    '19 T4R, TRDORP, KDSS
    RSG sliders, SOS skids, SOS bumper, wheels, tires, etc
    Maybe I misinterpreted this?

    The sidewall specifies max inflation
     
    Thatbassguy, Dec 21, 2020
    #57
  18. Dec 21, 2020 at 7:34 AM
    #58
    JL8Jeff

    #58
    JL8Jeff Well-Known Member

    Joined:
    Feb 6, 2018
    Member:
    #243662
    Messages:
    984
    First Name:
    Jeff
    Ewing, NJ
    Vehicle:
    2013 Tacoma reg cab
    OME 885/nitros, SPC UCA, 305/65/17, AAL
    Have you tried swapping back the old coils? Since you did several things at one time, you would need to go back and undo them one by one to see which item caused the drop. Do you have a scangauge or ultragauge or one of the apps to watch the truck while it's running? It might indicate if there is a vacuum leak somewhere or a running rich condition. How many tanks of gas have you run through since the tune up?
     
    JL8Jeff, Dec 21, 2020
    #58
  19. Dec 21, 2020 at 9:12 AM
    #59
    patos tacoma

    #59
    patos tacoma [OP] Well-Known Member

    Joined:
    Jun 18, 2020
    Member:
    #331792
    Messages:
    573
    Gender:
    Male
    Every Houston/Dallas trip RT is a 2 tanks of gas......@600 miles, so 2 RTs = 4 tanks of gas......no chance to undo anything, threw away old parts......
    Does vacuum leak Produce engine codes....?
     
    patos tacoma, Dec 21, 2020
    #59
  20. Dec 21, 2020 at 9:18 AM
    #60
    TireFire

    #60
    TireFire Superunknown Member

    Joined:
    Feb 6, 2016
    Member:
    #177349
    Messages:
    7,666
    Olympic Peninsula
    If one of the tune up items IS the culprit my money would be on the refurbished coils. Maybe they are weak leading to weaker spark so you get a less complete burn. Those are things I would have bought new OEM
     
    TireFire, Dec 21, 2020
    #60
    spitdog likes this.
Page 3 of 4

Products Discussed in

BG 44K Fuel System Cleaner Power Enhancer 11oz.
$24.50
To Top