Auto Transmission problems.

[Angry7M]

Hey guys, just right now my transmission went into neutral while I was at halfthrottle. I was going like 50mph when all of a sudden I pressed the accelerator to half throttle and the transmission downshifted but all of the sudden it went into neutral. I did a tranny diagnostic and no codes were stored. I also checked the Transmission oil and the oil is a little over over full, maybe half to 3/4 of a quart more.

MOds:
shimmed WG 10-11 psi
Open downpipe
Full 2.5 hard intercooler piping
Intake
and a B&M oil transmission cooler installed like 3 weeks ago.


The transmission was working great before.
Maybe with this mods its time for a 5 speed swap?

 

[tokiMK3]

blew a tranny.. auto>5spd

 

[Angry7M]

Well I drove it back home for 40minute and the transmission worked fine. I had no problems at all and I even went full throttle with ECT on and off and the trans worked great. Im not sure what happend, Ooo well i hope the problem dosent come back.

 

[suprahero]

I went through two automatics before I did the five speed swap. I kindof wish I'd just rebuilt the automatic with an upgraded kit.
http://www.importperformancetrans.com/toyotaauto.shtml#main

 

[gtsfirefighter]

Wow those things are expensive!!! I remember the days of getting a TH350 rebuilt for about $300, and that was with them dropping/reinstalling it. My sister had an 82 L-Type supra and in 1987 it cost about $400 to have it rebuilt.