No idea how to search this one.

1992 sc300 auto. 86k miles
Car was sitting for some time. Had idling fine, did the brakes on the front and started it and got the white gas smelling smoke from the tail pipes and a rough idle... searched the threads got the info I needed, reset the ecu idled out the excess fuel and took it for a drive to get a tank full of premium and some fuel intake cleaner. Went for a drive for the first time the car has seen pavement for 4 years... idles perfect, accelerates perfectly.

issue: after smooth acceleration from stop to anywhere between 40-55 when I bring my foot to steady throttle... it bucks a little, not the whole car just feels like its trying to shift? Doesn't feel like a skip, I thought it was the overdrive kicking on and off so I turned that off and it did it (less)but still did it... any thoughts?