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Trans bucks

Discussion in '1st Gen. Tacomas (1995-2004)' started by Idrivetoys, Apr 8, 2010.

  1. Apr 8, 2010 at 5:08 PM
    #1
    Idrivetoys

    Idrivetoys [OP] Well-Known Member

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    Lately when i put my truck in gear, particularly when its cold its bucks hard, same with reverse and same with changing gears from first to second, typically these symptoms are only when the truck is not fully warmed up, i figured this may be due to the idle up designed to warm the truck up.

    However lately its happening a lot more and a lot worse, the trans fluid is at proper levels and there is no free play in the drive shaft.


    I plan on doing a trans flush very soon so this doesn't damage anything but im pretty sure its not axle wrap, i tried to grease the joints and they are full.


    Any other ideas before i lose it and do a manual swap right now?



    Ryan
     
  2. Apr 8, 2010 at 6:54 PM
    #2
    Itchyfingaz

    Itchyfingaz Active Member

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    hmmm yah i have the same problem about it bucking and letting it warm up seems to do the trick. but open your door while your trucks on and switch it back and forth from reverse to drive. if you hear a clank, its your U-joints. i just had to change those. only reason i know lol!
     
  3. Apr 9, 2010 at 2:21 AM
    #3
    Idrivetoys

    Idrivetoys [OP] Well-Known Member

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    How much did that set you back?
     
  4. Apr 9, 2010 at 5:30 PM
    #4
    Idrivetoys

    Idrivetoys [OP] Well-Known Member

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    doesn't seem to make any noise in the u joints, anyone else?
     
  5. Apr 9, 2010 at 7:31 PM
    #5
    tacomaman06

    tacomaman06 Carolina Alliance: Enforcer

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    getting there....
    sounds like you may need to drop the pan and clean the filter screen out with brake cleaner, then reinstall everything and put in new fluid.

    edit....auto or manual??
     
  6. Apr 9, 2010 at 7:48 PM
    #6
    STLharry

    STLharry Lube: It's the key to penetration.

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    His side bar says its a DC, which are all auto right?
     
  7. Apr 9, 2010 at 7:49 PM
    #7
    tacomaman06

    tacomaman06 Carolina Alliance: Enforcer

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    getting there....
    yeah.....im pretty sure......but it was an oversight on my part.:eek:
     
  8. Apr 10, 2010 at 7:50 PM
    #8
    Idrivetoys

    Idrivetoys [OP] Well-Known Member

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    auto, until the swap to 5sp
     
  9. Apr 22, 2010 at 8:34 AM
    #9
    Idrivetoys

    Idrivetoys [OP] Well-Known Member

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    added some lucas trans additive and its muuuuch smoother now
     
  10. Sep 18, 2010 at 9:04 AM
    #10
    Idrivetoys

    Idrivetoys [OP] Well-Known Member

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    The buck is back, added some more lucas, still is bad, changed the fluid this morning and it was not very clean. Still doin the buck.


    so im not sure what to do now.
     
  11. Sep 18, 2010 at 9:33 AM
    #11
    Barnone

    Barnone Guest

    Idrivetoys,
    I was getting a clunk when my auto shifted from first to second.(2002 2.4l auto) Maybe not the same as your problem. About 85k miles and I had never changed the fluid (my bad).

    I miss read my owner' manual and was thinking that I had a sealed trans.

    I joined this forum and after reading from the experts here realized my error.

    Fluid was dirty brown instead of red.

    I then did a simple drain and refill at about 2.5 quarts a time for four times to get the fluid red and the clunk went away. (Drove it a bit between changes.)

    A real flush and filter change/clean probably would have been better as suggested above but the changes were easy.
     
  12. Sep 18, 2010 at 11:56 AM
    #12
    Idrivetoys

    Idrivetoys [OP] Well-Known Member

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    I might try and drain and fill it a few more times and drop the pan and check the screen
     
  13. Sep 19, 2010 at 7:08 PM
    #13
    Idrivetoys

    Idrivetoys [OP] Well-Known Member

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    Im giving it a few days of driving before i drain it again. Its worse when i hit Neutral for a second before going to Drive or Reverse, the revs go up to about 1500 when the engine isn't fully warm and the transition to a different gear is when it bucks.
     
  14. Sep 24, 2010 at 7:33 PM
    #14
    Idrivetoys

    Idrivetoys [OP] Well-Known Member

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    alright, re drained the truck (dirty fluid as expected) i drove about 200 miles since the last one, dropped the pan, cleaned off the magnets, sprayed out the screen and put it back together and filled it up.

    just waiting for morning when the engine is cold.


    Ryan
     
  15. Sep 25, 2010 at 8:17 PM
    #15
    Idrivetoys

    Idrivetoys [OP] Well-Known Member

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    Worked Great, shifts smooth and engages nicely! took some pics if anyone is interested.


    Drain fluid (14mm)

    unbolt dipstick (12mm)

    remove trans pan bolts (10mm)--need extension for bellhousing side

    remove pan

    remove gasket/sealant

    scrub pan out and clean magnets

    use brake cleaner and pressure clean the screen really well

    apply RTV to pan rim, barely snug bolts by hand, let rtv sit one hour then tighten down

    fill with fluid the next morning





    reinstall
     
  16. Sep 25, 2010 at 9:15 PM
    #16
    RideFast

    RideFast on the flats.

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    ...
    sounds like you really took your time cleaning the pan! Lets see some pics.

    How does it shift when cold? Later shift points until warm?
     
  17. Sep 25, 2010 at 9:41 PM
    #17
    AlexXx

    AlexXx Well-Known Member

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    You need to stay on top of your fluid levels as well as how clean they are. Not changing them can lead to failure and empty pockets.
     
  18. Sep 26, 2010 at 5:53 PM
    #18
    Idrivetoys

    Idrivetoys [OP] Well-Known Member

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    Shifts great at all temps now, engages D or R nice and smooth, extremely happy with the results


    The fluid levels were exactly where they should be, and it wasn't bright red by any means it was definitely time for a change, i should have done it already but it got left behind amidst deployment. The screen was just dirty and im sure could have been prevented with more frequent changes.


    [​IMG]

    The screen is the skinny rectangular section that looks like mesh

    [​IMG]

    This was after of course, i guess i forgot to take one of before, i used a wire wheel to get the old sealant off as best i could, despite being faded red in some spots its super smooth and in no danger of cracking and falling in the pan. There was no shavings or chunks of anything and i wanted to limit it to as little contamination as possible thats why i cleaned the pan so well, plus it was off so why not?
     
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