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Hard downshift during acceleration at highway speeds

Discussion in '1st Gen Tundras (2000-2006)' started by andythomasday, Oct 23, 2017.

  1. Oct 23, 2017 at 6:13 AM
    #1
    andythomasday

    andythomasday [OP] New Member

    Joined:
    Oct 23, 2017
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    Hi All-

    I recently purchased a 2002 Tundra 4wd. The transmission has a somewhat hard shift when downshifting from OD to 3rd in the highway. It’s not super hard but there is a noticeable bump felt in the vehicle. It does not occur when you manually press the OVERDRIVE OFF button or when the shift occurs at 40-50 mph. It only occurs at highway speeds and it does every time at those speeds. So far I have done two drain and drills with Toyota DOT 3 fluid. There has been no change. I am considering doing the auto rx thing next.

    Any thoughts? I’ve read about the planetary gear but it sounds like that is a huge CLUNK and this has been happening for at least several thousand miles. Maybe a bad shifting solenoid or pressure switch?

    thanks

    Andy
     
  2. Oct 23, 2017 at 6:43 AM
    #2
    1UPPER

    1UPPER Not A New Member

    Joined:
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    TEXAS
    Flux capacitor!
    Welcome to the forum. Does your truck have larger sized tires? How many miles on the truck? Do you have a lift or level kit on your truck? The more information you provide the more likely someone may have a suggestion or solution. If you have any photos you can upload them.
     
  3. Oct 23, 2017 at 11:30 AM
    #3
    andythomasday

    andythomasday [OP] New Member

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    The truck is all stock with 180k seemingly easy miles. Also, I meant atf 3 not dot 3.
     
  4. Nov 2, 2017 at 3:22 PM
    #4
    Somemedic

    Somemedic New Member

    Joined:
    Aug 5, 2017
    Member:
    #8922
    Messages:
    100
    Gender:
    Male
    First Name:
    Mark
    Vehicle:
    2000 SR5 AC Cab/ 2010 Dbbl Cab Long Bed
    Yak racks Awning LED dash LED headlights / fog lights Hellwig Helper springs KC HD springs Bed slide out Sony AX100 w/ cam SOS Big Brake front kit Rancho 9000 front / rear
    Pillow block bearing on the drive shaft may be worn and allows the shaft to slide back and forth...
     
  5. Nov 2, 2017 at 6:33 PM
    #5
    Phillipk98

    Phillipk98 05 sequoia

    Joined:
    Apr 26, 2017
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    2005 sr5 sequoia
    Are you talking about the carrier bearing? Never heard of pillow block bearing. But I can always learn something new.
     
  6. Nov 9, 2017 at 2:32 PM
    #6
    Somemedic

    Somemedic New Member

    Joined:
    Aug 5, 2017
    Member:
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    Messages:
    100
    Gender:
    Male
    First Name:
    Mark
    Vehicle:
    2000 SR5 AC Cab/ 2010 Dbbl Cab Long Bed
    Yak racks Awning LED dash LED headlights / fog lights Hellwig Helper springs KC HD springs Bed slide out Sony AX100 w/ cam SOS Big Brake front kit Rancho 9000 front / rear
    The carrier bearing.... yep. Sorry
     
    Phillipk98[QUOTED] likes this.

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