2000 Toyota 4Runner engine races after starting

Engine problem
2000 Toyota 4Runner Engine Size unknown Wheel Drive Type unknown Automatic 90,000 miles

Immediatly after starting the engine races at high RPM like the accelerator pedal was pushed down. In the old days I would have said choke or idle speed, but with there foreign cars I have no idea. Do I need to tap the accelerator to slow it down?
It is really loud; I heard it on the street from inside the house last night.
Thanks