Grand Crarn Transmission is heated and fails

Hello everyone for a few days, my van 98 with 3.3 engine and transmission 604? He began to fail, when I stop a few seconds to enter first and the reverse does not enter this when the engine reaches its normal temperature of heating. The oil and filter replace the speed sensors, the selenoid box and the failure continues, could they help me? thank you

hello.
With all what has already been done my question is if you have Check Engine of the Cash Compu. Most likely it is a protection system that has the ECU to avoid some greater failure, and of course it is hot it may be that the turbine is not sending the pressure enough and blocks the system. Do not try to wait for it to pass alone and check your box.
luck....

Thank you very much, for the answer and I tell you that they already checked and there is nothing apparent what I have noticed is that the temperature indicator does not move, that is, when the temperature rises, the changes and the reverse work well and when the needle is normally in half no longer to half no longer steam or rise to the temperature by these rumbos in Mexicali is very low does not move the needle and the fault is presented.

I already passed that Czech failure The Board of the Solenoid module is broken if the main aluminum drum is broken and when it is forced and fled and protected

What good night many of those units fail from the same thing you can do is k colloken an additional cooler yk the scanneen and k enters routine or protection The box YK review the clutch bell since it fined off the entire precion and no longer makes changes