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Transmission Not Engaging Downshift When Accelerating Hard

Discussion in '2nd Gen. Tacomas (2005-2015)' started by bradplaysguitar, Aug 3, 2021.

  1. Aug 3, 2021 at 9:46 AM
    #1
    bradplaysguitar

    #1
    bradplaysguitar [OP] Member

    Joined:
    May 9, 2019
    Member:
    #292801
    Messages:
    10
    2006 Tacoma TRD Sport DBL Cab 4.0 V6

    when cruising highway at 55 mph ish and stepping on the gas to accelerate up a hill or to pass someone truck is not engaging what I think is second gear. It feels like it engages for a second but then slips and the RPMs go up to about 4k and there is no power to the wheels. When I let off the gas slightly it engages 3,4 or OD. Ultimately under load if feels like it downshifts, engine revs up but then it seems to instantly pop out of gear or something. No CELs. Thoughts?
     
    bradplaysguitar, Aug 3, 2021
    #1
  2. Aug 3, 2021 at 9:51 AM
    #2
    BlkDakDave

    #2
    BlkDakDave Well-Known Member

    Joined:
    Oct 20, 2012
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    First Name:
    David
    CC TX
    Vehicle:
    07 AC PreRunner TRD/Off Road
    Low fluid level? Fluid and screen need changing? When is the last time you service the transmission? I'd start there...

    Maybe @gearcruncher has some input.
     
    BlkDakDave, Aug 3, 2021
    #2
    gearcruncher and bradplaysguitar[OP] like this.
  3. Aug 3, 2021 at 6:19 PM
    #3
    Dm93

    #3
    Dm93 Test Don't Guess

    Joined:
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    2014 DC OR 6spd 4x4
    Predator tube steps, Ranch Hand grill guard, Magnaflow CatBack exhaust, Toyota tool box & bed mat, 2LO Module by @Up2NoGood, Rearview Compass/Temp Mirror, Tune by @JustDSM.
    A good writeup with lots of info and links for the A750E transmission by @gearcruncher here. Hopefully something there helps you, if not you may have to wait and see what he thinks, he is the transmission guru on here.
     
    Dm93, Aug 3, 2021
    #3
    bradplaysguitar[OP] and BlkDakDave like this.

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