Hi. When I change gears from drive to reverse on my automatic transmission, the engine revs up and the transition between gear is too rough. Sometimes it works pertfectly but most of the time it does not. Can somebody tell me if you had that problem and how to fix it? Thank a lot.

HArsh shift reverse to forward
 

How fast does the engine idle in neutral?

High RPM idle speed
 

I had the same problem when my overload protection relay failed.
Please ask your dealer to inspect the relay what located above your fuse box in passenger side.

Ezzy.