There's probably 2 different things on the throttle body. There's a mechanical stop for the throttle, and a needle valve which lets air bypass the throttle.

The mechanical stop for the throttle should allow the throttle plate to close completely. It should only prevent it from wedging shut, it shouldn't actually hold it open.

The little idle adjustment screw is probably above the throttle bore, recessed in a hole. There's an adjustment procedure that's probably different for different years/models, so get your hands on a repair manual.

For example, on your '94 GSR you'd unplug the IACV & set 450 rpm. Then reset the ECU. Plug the IACV back in, start & idle for 10 minutes without touching the throttle. The '92 Accord probably has a similar procedure.