The earlier 4 speed autos were unfortunately known for bad OD planetary gear sets, which end up contaminating the rest of the trans internals as a result of failing. Once you have the symptoms, it's too late and the only option is a rebuild. For now you can drop the pan and see how much metal you have in there, but it's not going to be long until your trans completely fails. The torque converter will need replacing as well if you get it rebuilt.
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Originally Posted by toyofsomd
Ok looking to see if I can get some help because I don’t know what to do or have no clue what it could be. The last couple of days there have been 3 times or so that my truck has not wanted to shift from second to third at all and it’s getting on my nerves and it goes up to red line and I don’t want to mess my transmission up any more than it already is now. But for a while now my truck as been shifting hard from first to second where it is like a delayed shift. But I have never had a problem with second to third and so on. So any help or ideas of what it could be would be very helpful it’s a 2000 tundra with 126xxx miles on it.
Thank you
Dan
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2007 Tundra 5.7 4x2 RCSB slate metallic
2005 Corolla - all stock, cause it's the wifes
1986 Mustang GT - the stereo is under the hood

1990 Corolla - cause it was really cheap