03 Murano Acceleration issue and RPM fluctuates at highway speeds

[03MuranoSK]

Having issue with my '03 Murano. I was driving yesterday doing some errands and everything seemed fine, then basically on my way home I noticed when I tried to accelerate after coming to a stop it would be very sluggish... then finally 'kick' in... like what the others have posted about... the only difference is when I got up to highway speeds, roughly 60mph the RPM's would go from just over 1500 to about 2000, then back down and repeat after a bit... (no inclines/declines). So I stopped at a shop and they checked the codes and it stated the transmission needed replacing BUT what didn't make sense to me was after stopping there, it didn't act up for the remaining 20 mile drive. Drove a little bit today and it seemed ok too. Any suggestions?

[03MuranoSK]

Had come across this on another thread... The problem was a stop switch that tells the transmission that the car has stopped and must resume movement in a lower range in the transmission. The switch was failing and the trans did not get the signal that I had stopped. Basically like starting in 4th gear from a dead stop.

This doesn’t answer what it was doing at highway speeds though...