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Power issues between 3rd and 4th gear

Discussion in '1st Gen Tundras (2000-2006)' started by O.C.Tundra, Aug 28, 2016.

  1. Aug 28, 2016 at 12:47 AM
    #1
    O.C.Tundra

    O.C.Tundra [OP] New Member

    Joined:
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    Hello all,

    My Tundra developed an issue recently and I have been unable to determine the cause or find any forums with information on it. Bare with me as I try to get all the info I can out in one post.

    The vehicle:
    2002 Tundra, v6 auto trans, 2WD approximately 56k.

    The issue:
    Vehicle has recently developed an issue with power at the top end of third gear. When heavily accelerating, the engine will shift properly from first through third. As the engine revs up in third at WOTor near WOT, the engine will rev but there is no transfer of power to the transmission. This begins at approximately 4k RPM/55MPH. As the engine continues to rev, the truck actually slows down. The trans will eventually shift into 4th gear as the RPMS reach the top of the gauge. On some occassions, the truck will shift into 4th gear and still have a lul in speed. Engine revs like 'normal' but there is no speed there.

    If I let off the gas, the trans shifts up and grabs like normal. If I accelerate at a less intense pace, say 3/4 throttle or less, then the engine revs and trans shifts as it should. This isn't something that happens 100% of the time, its more like 75% of the time.

    I've cleaned the MAF recently (the proper way, that much I know), with no change in performance.

    I've read similar issues as this, except they happen off the line in first gear. So not what I'm experiencing.

    Has anyone had similar experiences or know of a fix? I'm thinking possible MAF replacement (~$40) but am looking for guidance before throwing money at the truck.

    Thank you in advance.
     
  2. Aug 28, 2016 at 4:40 AM
    #2
    Mike

    Mike Tread lightly.

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    south carolina
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    2003 tundra sr5 4x4 stepside....
    yep bank account is running low from it..
    First off when was the transmission serviced last? Oil and filter?
     
  3. Aug 28, 2016 at 4:45 AM
    #3
    George14

    George14 New Member

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    George
    West Virginia
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    2014 Tundra SR5 Dc TRD Off Road 5.7L with tow package
    None
    Welcome to the fourm
     
    BlueFalconActual likes this.
  4. Aug 28, 2016 at 2:23 PM
    #4
    alalmcgrath

    alalmcgrath New Member

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    Boulder Creek Ca
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    2011 DC 4.6L
    Sounds to me like a transmission problem.
     
  5. Aug 28, 2016 at 6:07 PM
    #5
    O.C.Tundra

    O.C.Tundra [OP] New Member

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    Thank you for the responses, and thank you for the welcome to the forum.

    As for the transmission service. I have no clue when or if it was serviced. The truck is my girlfriends, it was handed down in a will about 5 years ago and honestly has probably only seen 20k since then. Not much use on this guy, spends most of it's time in our driveway. The fluid is a little dirty but still pretty vibrant red with no visible debri on the stick.

    I'll look into flushing the trans fluid out. These are internal trans filters correct?
     
  6. Aug 28, 2016 at 6:13 PM
    #6
    LOTSOFTOYS

    LOTSOFTOYS New Member

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    Jace
    Mile high
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    There is a pickup filter inside the pan. But I'd start with dropping the pan and inspect for brass debris in the fluid and other debris on the magnets. Sounds like something is slipping inside the trans.
     
  7. Oct 20, 2016 at 7:11 AM
    #7
    Krazie Sj

    Krazie Sj Resident Jackass

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    Power Serge
    LV-426 (Acheron)
    Vehicle:
    07 Mall Crawler Extordinare
    All Pro Long Travel with Walker Evan Coil Overs, All Pro Expedition Leaves with Walker Evan Resi Shocks, All Pro IFS, transmission and E-Locker skid plates/guards, ARB Bumper with Kragen LED flood lights, 10,000lb SuperWinch, All Pro Rear Bumper, All Pro Sliders, Custom RTT Rack with Roto Pack, ARB Simpson RTT, Bed Tray. 285x75R16 Mickey Thompson MTZs and 285x75R16 Yokohama Geolander it g072. Airaid Short ram intake, Intake manifold spacer, Borla Cat back Exhaust.
    Anything else done recently to the vehicle? When was the last time the timing belt was done?

    Does the truck have power off the go? In gears 1-3? Or is it just 4th gear only?
     
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