Transmission Problems? Ask a Mechanic for Answers ASAP
Hello and thank you for your question,The problem you are describing is likely an internal failure providing the fluid is full. In order to determine if in fact that is the case you need to start first with having the system scanned with a Toyota compatible scan tool to see if there are any fault codes setting pertaining to the electronic transmission control system. If no codes are stored then unfortunately the problem is an internal failure which would require a removal and tear down and or a replacement.
If the the problem is an electronic control issue there will be a fault code and or codes and if the pump has failed you would likely see some shift solenoid fault codes due to the lack of pressure. As for replacement cost I can tell you the laboe hours but you will need to call around to your local suppliers to determine the transmission replacement cost. The labor to remove and replace it runs right at 9 hours.
A used transmission is fine as long as they will guarantee its in good shape.
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