Throttle body replaced now high idle

The best suspect is a leaking throttle body gasket. Unplug the two-wire connector to the idle air control valve. If the gasket is leaking, unplugging the valve will not lower the idle speed. Spray some water around the gasket while the engine is running and still cold. If you see or hear it get sucked in, and engine speed changes, watch wear that water gets sucked in. Watch around the throttle shaft too. If the bushing is worn, the shaft can move away from the seal.