1995 Ls400 Transmission Problem

[ucf20 Jason]

Im in need of some serious help. I have an LS400 which just hit 167k and trans service was done at 157k. I start the car it runs fine all the gears shift smooth but about 5 minutes after or once the car is completely warm none of the gears work anymore.

I gas it to move and my rpms just go up. I turn the car off let it sit for alittle and it repeats itself. What can it be? Thanks in advance.

[Exhaustgases]

It could be an actual transmission mechanical ie hydraulic problem, or it could be electrical.

And it could be this.

http://www.clublexus.com/forums/ls400/656360-all-my-crazy-lexus-issues-solved-ecu-leaking-capacitor.html

[Exhaustgases]

Any news on this one? You can check the pressures, since I don't have a manual on the trans yet not sure about valving that can cause the problem. I have seen bad seal rings cause a heat related pressure loss.

[brybo86]

possible solenoids didn't i read that these go bad? they are change by removing the tranny pan not too bad