I have a 2002 Toyota Corolla Sport. It starts up fine and drives anywhere from a few yards to half a mile and then stops moving. The car does not stall or turn off, it just will not move forward or backward. If I turn the car off, wait a few minutes and start it back up, it will move again a little bit and then stop moving again.
I have changed the transmission filter and fluid. Nothing is leaking. I disconnected the battery to restart the computer. Unfortunately, this turned off the "check engine light" and now nothing comes up on the garage's diagnostic tester. I really need my vehicle and do not know where to start to fix this problem. Is it as simple as a speed sensor or do I need a whole new transmission? HELP!