If I slow down to about 20 it will change, then I don,t have any more problems. This happens the first time I drive it on any given day. If I park it for 4 or 5 hours, the problem starts all over again.
My Camry,s transmission has trouble changing when it is cold. on 1991 Toyota Camry
Have the trans serviced, not flushed! Any repair shop should be able to do this. (Fluid and filter changed)
I would take it to a trenny shop and have them look at it but I also agree with pushrod