My 1994 mit. 3000 gt starts but have to put foot on gas pedal for it stay running idled it up but then when come to stop its idling to fast . Help please

I would be inclined to replace the Ignition Control Module, JA177, $82.99, AutoZone.

Also, I would clean (or replace) the Idle Air Control Valve (IACV), throttle plate, and throttle body with TB cleaner; afterwards, change the air filter. Set idle rpm to spec.