I just picked up a '99 Forester L with a 4EAT for my wife. This is our 2nd Subi, we used to have a '99 Outback with a 4EAT. It didn't do this. When in 4th and then accelerating enough to cause a kickdown to pass, the transmission has a violent kickdown. It feels as if you got rear ended. RPMs increase substantially after pressing the accelerator before the kickdown, at high throttle, resulting in the violent kickdown. I've adjusted the TPS, drained pan (fluid was clean and not burnt), replaced filter, refilled, no change. The ATF Temp light isn't on and I have not been able to pull any codes from it.
The car shifts fine under all other circumstances.
Any ideas?