2000 Nissan quest with automatic transmission

I don’t know how to tell you this gently, but your automatic transmission has gone on to its earthly rewards. The seemingly innocent shift from drive to reverse put so much stress on the transmission that one or more major systems have given up and stopped working. At a guess, I think the torque converter is gone, as are the clutches and bands and, as a topper, I think the planetary gearing aren’t in their orbits anymore. I don’t want to think what may have happened to the other parts of the transmission.

Suffice it to say, your Nissan won’t be going anywhere for a while, unless it is on a ramp truck to a service shop. Your only course of action is replacing the transmission with a rebuilt, for starters. That will cost you about $3,400.

Also, you are going to have to have the technician pay close attention to the input and output shafts. It is possible that the reverse torque that happened may have thrown them “out of true.” In other words, instead of working correctly, they are kind of wobbly and that means all kinds of nasties can happen. A wobbling shaft can set up a set of vibrations that cannot only damage linked components but, worst case, can destroy them. The good news is that you did quickly get back into the proper gear. The bad news is that it happened in the first place.