why does the car stall when key is released on 1993 Acura Vigor

when I release the key the car stalls

2 answers
If the car starts when the ignition key is turned but cuts out when the ignition key is allowed to return to the run position it sounds like the ignition switch electrical portion is failing. Honda and Acura had problems with the electrical portion of the ignition switch on several cars and in fact had a recall on some models.
you have to replace the ignition switch