Crown victoria

it. Now the problem with my car is, when i
accelerate and right before it is about to shift gear
from 1 to 2, the car feels like "it gives out"..
meaning it feels like the acceleration all of sudden
stops for a split second even with my foot on the
gas. And gives a little shake so i feel the loss of
power for that split second. This problem doesn’t
always occur, it happens here and there. The car
runs fine on the highway and when the gear is
above 2. The transmission is fine according a
transmission expert.