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1998 3rz tans problems

Discussion in '1st Gen. Tacomas (1995-2004)' started by ubnpast, Dec 13, 2009.

  1. Dec 13, 2009 at 8:52 PM
    #1
    ubnpast

    ubnpast [OP] Well-Known Member

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    I recently got a 98 tacoma 4x4 4 cyl. I also noticed the transmission is acting funny, after going down the road, the trans shifts from 1st to 2nd somewhat slower than the other gears then firm at the last second.
    It idles around 350rpm while in D, shifting into other gears is perfectly fine.

    When preloading (to test the stall speed) the rpms only go up to 1,250 (I have a 00 manual which states it should be around 1,850 +/- 150rpm).

    My question is that does this sound like a bad torque converter? If so how long would it take to replace if I were to do it myself.

    These rpm's are based upon the cluster, I have not yet plugged my scan tool into the obd port to see the actual values.
     
  2. Dec 14, 2009 at 6:03 AM
    #2
    98tacoma27

    98tacoma27 is gooder 'en chicken Moderator

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    Have you tried a few drain and fills first?
     
  3. Dec 14, 2009 at 6:55 AM
    #3
    xsvtoyz

    xsvtoyz Well-Known Member

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    350rpm?? mine is 550rpm and trying to die yeah drain and fill drain and fill and then see how it is
    I kind of feel your tach may be a bit off.
     
  4. Dec 14, 2009 at 7:35 AM
    #4
    ubnpast

    ubnpast [OP] Well-Known Member

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    I have not tried that yet. Would you think that could only possibly affect the 1-2 shift and not any others?
     
  5. Dec 14, 2009 at 8:24 AM
    #5
    ubnpast

    ubnpast [OP] Well-Known Member

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    My scan tool indicates the rpm is at 1,987 when preloading it (within spec), so the torque converter is good. Idle is around 687 while in D.
    I wonder whats causing the tack to be off.

    Anyway, would a drain and fill of the transmission fluid really help the shifting between 1st and 2nd, anything is possible but its only between those gears.


     
  6. Dec 14, 2009 at 8:28 AM
    #6
    98tacoma27

    98tacoma27 is gooder 'en chicken Moderator

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    It could help but there is only one way to find out. You may have to do it a couple of times. DO NOT FLUSH IT. Run a 500 mile cycle between a few drain and fills.
     
  7. Dec 14, 2009 at 8:37 AM
    #7
    ubnpast

    ubnpast [OP] Well-Known Member

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    Would this atf be sufficient ?
    [​IMG]

    If not what do you guys suggest?


     
  8. Dec 14, 2009 at 9:05 AM
    #8
    98tacoma27

    98tacoma27 is gooder 'en chicken Moderator

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    As long as it complies to the manual's specs it would be fine. I cannot guarantee this will work but your only other alternative is a rebuild/new tranny.
     
  9. Dec 14, 2009 at 9:14 AM
    #9
    xsvtoyz

    xsvtoyz Well-Known Member

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    my 1-2 shift is a little soft so it may be normal but fluid change first and see how it goes. I go to Yota and they flush it every 60k and yeah its expensive but I got no trans issues so .............. I can't coment on the fluid.
     
  10. Dec 14, 2009 at 9:16 AM
    #10
    98tacoma27

    98tacoma27 is gooder 'en chicken Moderator

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    You will only get about 2-3 quarts on a drain and fill also, per the FSM
     
  11. Dec 14, 2009 at 6:48 PM
    #11
    98lowflyingtacoma

    98lowflyingtacoma Well-Known Member

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    are you sure you checked your vacuum lines? might have a leak
     
  12. Dec 14, 2009 at 7:10 PM
    #12
    ubnpast

    ubnpast [OP] Well-Known Member

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    I havent checked the vacuum lines, I dont know how.

    The trans fluid is dirty, ill change it tomorrow:
    [​IMG]
     
  13. Dec 15, 2009 at 8:33 PM
    #13
    ubnpast

    ubnpast [OP] Well-Known Member

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    Changed 3 qts today and still the same. How would I go about checking the vacuum lines?
     
  14. Dec 16, 2009 at 4:48 AM
    #14
    98tacoma27

    98tacoma27 is gooder 'en chicken Moderator

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    The vacuum lines are on the intake. If you have a propane torch, you can turn the gas on (NO FIRE) and move the nozzle around any line you can find. If the motor starts to increase rpms then that would be the line that has a leak, if there is a leak.

    The only connection the tranny has to the intake is a throttle cable.
     
  15. Dec 17, 2009 at 9:12 PM
    #15
    ubnpast

    ubnpast [OP] Well-Known Member

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    I took some slack out of the cable going to the trans, it shifts 90% better now, thanks
     
  16. Dec 18, 2009 at 6:18 AM
    #16
    98tacoma27

    98tacoma27 is gooder 'en chicken Moderator

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  17. Dec 18, 2009 at 9:10 AM
    #17
    ubnpast

    ubnpast [OP] Well-Known Member

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    What is that 1mm, the distance the cable is supposed to move (slack)?
    [​IMG]
     
  18. Dec 18, 2009 at 9:12 AM
    #18
    98tacoma27

    98tacoma27 is gooder 'en chicken Moderator

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    No, that's the distance the stopper should protrude from the end of the outer cable.
     
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