This has been going on for some time. i'll be cruising on the highway in OD at around 60mph then the rpms drop and there is no throttle response..i'll slowly press the accelerometer and my rpms won't climb, but if I give it a quick jab then the rpm's will rise.. this is only in 0D. This won't happen in just Drive! this also did this in my old Taurus SHO a4 it's been going on since my Z was stock