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2012 Tacoma 4x4 with 4.0 sluggish and no acceleration

Discussion in '2nd Gen. Tacomas (2005-2015)' started by rbaclagan, Mar 31, 2019.

  1. Mar 31, 2019 at 6:29 AM
    #1
    rbaclagan

    #1
    rbaclagan [OP] New Member

    Joined:
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    First Name:
    Robert
    Vehicle:
    2012 Toyota Tacoma 4x4
    RC 6 inch lift, KX01 wheels.
    Anyone know what may cause very sluggish acceleration? I have no check engine light and truck seems to run and idle fine. Only issue being that it has little acceleration and tops out at about 80 mph.
     
    rbaclagan, Mar 31, 2019
    #1
  2. Mar 31, 2019 at 6:50 AM
    #2
    TexasWhiteIce

    #2
    TexasWhiteIce Well-Known Member

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    Low tire pressure?
     
    TexasWhiteIce, Mar 31, 2019
    #2
  3. Mar 31, 2019 at 6:53 AM
    #3
    Robertocritser

    #3
    Robertocritser Well-Known Member

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    Levi
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    When was the last tune up?
     
    Robertocritser, Mar 31, 2019
    #3
  4. Mar 31, 2019 at 6:55 AM
    #4
    DesertRatliff

    #4
    DesertRatliff Well-Known Member

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    Mt. Hood, OR
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    Mas Tacos Por Favor
    Checked your air filter? Bad gas? Checked for pending codes with a scanner?
     
    DesertRatliff, Mar 31, 2019
    #4
  5. Mar 31, 2019 at 11:58 AM
    #5
    JGreene0717

    #5
    JGreene0717 Member

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    Jason
    Wetumpka, AL
    Vehicle:
    2015 Tacoma SR5 4x4 Silver Sky Metallic
    2/1.5 lift, 16x8.5 Level 8 Guardian wheel with 285/75r16 Toyo AT2.
    Catalytic converter could be plugged up. Would think a code would be thrown though.
     
    JGreene0717, Mar 31, 2019
    #5
    b_r_o and inwood customs like this.
  6. Mar 31, 2019 at 12:04 PM
    #6
    Foozer

    #6
    Foozer Well-Known Member

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    265/75/16 BFG KO2
    My guess: Secondary air injection pump issue/failure. Common problem in 2012s (my 2012 also had that same issue). Take it to a dealership, theres a TSB for it and should fix it for free (assuming you're under 150k mileage).
     
    Last edited: Mar 31, 2019
    Foozer, Mar 31, 2019
    #6
    JGreene0717 likes this.
  7. Mar 31, 2019 at 12:29 PM
    #7
    Petit1989

    #7
    Petit1989 Well-Known Member

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    Spark plugs made a huge difference in mine.
     
    Petit1989, Mar 31, 2019
    #7
  8. Mar 31, 2019 at 1:02 PM
    #8
    Monkeybutt2000

    #8
    Monkeybutt2000 Well-Known Member

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    6" lift huh, what size tires?
     
    Monkeybutt2000, Mar 31, 2019
    #8
  9. Mar 31, 2019 at 2:48 PM
    #9
    Marshall R

    #9
    Marshall R Well-Known Member

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    none
    If the tires are much over 1" taller than stock without re-gearing I think that is going to be your problem.
     
    Marshall R, Mar 31, 2019
    #9
  10. Mar 31, 2019 at 2:52 PM
    #10
    CBenfell

    #10
    CBenfell I don’t know sh*t about f*ck

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    Just guessing but cleaning MAF sensor, changing spark plugs, new air filter are possible fixes and pretty cheap/easy things to rule out.
     
    CBenfell, Mar 31, 2019
    #10
    BassAckwards likes this.
  11. Mar 31, 2019 at 3:24 PM
    #11
    BassAckwards

    #11
    BassAckwards Well-Known Member

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    Full-time AWD & BorgWarner EFR 6258
    Good advice, this is where i'd start as well
     
    BassAckwards, Mar 31, 2019
    #11
    CBenfell[QUOTED] likes this.
  12. Mar 31, 2019 at 3:43 PM
    #12
    Pigpen

    #12
    Pigpen My truck is never clean

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    Northwest Montana
    Vehicle:
    2012 AC Manual 4.0 4x4 Base Model
    Access cab with child seat in the back, yellow wire mod, diff breather relocated to tail light, engine block heater, Leer topper with Yakima tracks and rack, Yakima rack on cab, Ride Rite air bags with Daystar cradles, CBI hidden front hitch, wired for winch front and rear Warn quick connect, Warn x8000i on external carrier, sway bar delete, trailer plug relocated to under bumper, Pelfreybilt IFS and Mid skids, BAMF Tcase skid, ECGS front diff bushing, ARB CKMA12 compressor, 255/85/16 Backcountry MT 3 load E tires on stock steel rims, Toyo M55 tires (same size) on another set of stock steelies, Up2NoGood heated mirror kit, Husky X-act Contour front floor liners, Northstar AGM 24F battery under the hood, Northstar 27F in the cab, Redarc 25 amp DC to DC charger, Pelfreybilt bolt on sliders with kickout and top plates, TRD Pro headlights, Depo smoked tail lights, Energy suspension body mount bushing kit, OME Dakar leaf packs with AAL, OME rear shocks, OME 90021 front shocks with 885 coils, SPC LR UCAs, Up2NoGood 2wd low range mod, 4 Wheel Campers Grandby slide in camper, 4xinnovations high clearance rear bumper, Uniclutch 800 lb/ft clutch
    It would still go over 80 mph... eventually.
     
    Pigpen, Mar 31, 2019
    #12
  13. Mar 31, 2019 at 3:44 PM
    #13
    Pigpen

    #13
    Pigpen My truck is never clean

    Joined:
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    Messages:
    9,167
    Gender:
    Male
    First Name:
    Dan
    Northwest Montana
    Vehicle:
    2012 AC Manual 4.0 4x4 Base Model
    Access cab with child seat in the back, yellow wire mod, diff breather relocated to tail light, engine block heater, Leer topper with Yakima tracks and rack, Yakima rack on cab, Ride Rite air bags with Daystar cradles, CBI hidden front hitch, wired for winch front and rear Warn quick connect, Warn x8000i on external carrier, sway bar delete, trailer plug relocated to under bumper, Pelfreybilt IFS and Mid skids, BAMF Tcase skid, ECGS front diff bushing, ARB CKMA12 compressor, 255/85/16 Backcountry MT 3 load E tires on stock steel rims, Toyo M55 tires (same size) on another set of stock steelies, Up2NoGood heated mirror kit, Husky X-act Contour front floor liners, Northstar AGM 24F battery under the hood, Northstar 27F in the cab, Redarc 25 amp DC to DC charger, Pelfreybilt bolt on sliders with kickout and top plates, TRD Pro headlights, Depo smoked tail lights, Energy suspension body mount bushing kit, OME Dakar leaf packs with AAL, OME rear shocks, OME 90021 front shocks with 885 coils, SPC LR UCAs, Up2NoGood 2wd low range mod, 4 Wheel Campers Grandby slide in camper, 4xinnovations high clearance rear bumper, Uniclutch 800 lb/ft clutch
    If this was the case, it would be in limp mode and wouldn't ever get to 80 mph.
     
    Pigpen, Mar 31, 2019
    #13
  14. Mar 31, 2019 at 3:45 PM
    #14
    Pigpen

    #14
    Pigpen My truck is never clean

    Joined:
    Mar 6, 2012
    Member:
    #74319
    Messages:
    9,167
    Gender:
    Male
    First Name:
    Dan
    Northwest Montana
    Vehicle:
    2012 AC Manual 4.0 4x4 Base Model
    Access cab with child seat in the back, yellow wire mod, diff breather relocated to tail light, engine block heater, Leer topper with Yakima tracks and rack, Yakima rack on cab, Ride Rite air bags with Daystar cradles, CBI hidden front hitch, wired for winch front and rear Warn quick connect, Warn x8000i on external carrier, sway bar delete, trailer plug relocated to under bumper, Pelfreybilt IFS and Mid skids, BAMF Tcase skid, ECGS front diff bushing, ARB CKMA12 compressor, 255/85/16 Backcountry MT 3 load E tires on stock steel rims, Toyo M55 tires (same size) on another set of stock steelies, Up2NoGood heated mirror kit, Husky X-act Contour front floor liners, Northstar AGM 24F battery under the hood, Northstar 27F in the cab, Redarc 25 amp DC to DC charger, Pelfreybilt bolt on sliders with kickout and top plates, TRD Pro headlights, Depo smoked tail lights, Energy suspension body mount bushing kit, OME Dakar leaf packs with AAL, OME rear shocks, OME 90021 front shocks with 885 coils, SPC LR UCAs, Up2NoGood 2wd low range mod, 4 Wheel Campers Grandby slide in camper, 4xinnovations high clearance rear bumper, Uniclutch 800 lb/ft clutch
    We need to know more about your truck, location, where you are driving it. The more specific you can be on everything, the more we can help you.
     
    Pigpen, Mar 31, 2019
    #14
  15. Mar 31, 2019 at 6:31 PM
    #15
    TexasWhiteIce

    #15
    TexasWhiteIce Well-Known Member

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    Where is OP?
     
    TexasWhiteIce, Mar 31, 2019
    #15
  16. Mar 31, 2019 at 6:34 PM
    #16
    DirtTaco

    #16
    DirtTaco Well-Known Member

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    Similar to his truck- this thread is sluggish with no acceleration.
     
    DirtTaco, Mar 31, 2019
    #16
    Monkeybutt2000 and JGreene0717 like this.

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