I have a 92 Ls Awd Legacy Auto with 366k... When i purchased the car the mechanic said to take it easy on the trans.. as it was on its last legs. This was over 2 half years ago! so iv been good to her, but today iv had problems. i was 15 mins out on the highway, the car was warm... going up hill... i took my foot of the gas and the car MADE A LOUD THUMP! and shudder... i then put my foot back on the gas and it did the same thing! the car has done this beforebut not this loud! and u sure could feel it! then at the stop lights the trans. would not gear down... it just sat at 1500rpm when i was at a full stop! it just wanted to go! so every time i take my foot off the gas it ThUmps-and then when i put my foot back on It Thumps! into gear it seems? my trany fluid lvl is half full... and under 8k or sooo oil is good... BuT! it has just started to leak 1-2 drops like 1-2days.. and it has never leaked anything! my brakes do seem soft! too? its werid.... allthis in like the past week....

EDIT: just did the TCU,test and i have a 12=Duty Solenoid B... BUt this is a PREVIOUS Problem test.... THe EXISTING test had no codes....

 

So How can i tell whats Wrong With My Trans?? Also..did i leave anything out? I learn fast.. just tell me what to do Please Help A starving student Out!

And I just put on 04 Rims :{ so Not the best week!

Try reseting the TCU. You can do this by removing the EGI/TCU fuse I believe it's fuse 14 in the fuse panel by the driver's foot well.

 

You may just be ready for a new tranny. 300k+ miles on an auto is pretty damn good IMO.