07 Honda Accord cleaning accelerator, idle speed 1000 rpm. How to match?

It depends on the type of throttle valve:

If it is the cable throttle, it is not necessarily a matching problem, but may be caused by the failure of the idle motor, because the cable throttle does not control the idle speed by controlling the opening of the throttle valve plate, but the idle motor.

If it is an electronic throttle, it may be a matching problem, and the matching needs a detector. It is also possible that the valve is stuck. It needs to be checked to be sure.