Don't know about your problem but my 1990 honda accord will not keep running unless you hold the key in the ON position, and once you let it go it stops running, I have been told that it is either a fuel pump problem or the ignition switch is going as of yet it has not stopped while running on the roads. Any more ideas as to my problem but I believe that after intwernet checks it is an ignition switch problem which I am going to replace and hope it fixes this problem.