I hav e the same problem with my Neon 1995 sprt 5spd. My Engin Check light
stays on all the time, I found out if you have a lil leak in your engin
anywhere your Check Engin light will indicated it. I used this engin leak
stoper for my neon and it seemed that it wasnt going to work , but after I
driven my car 3 days it shut off. So Check at your local "Auto Advance"
by the Engin Oils it should be right there. Just try it and see it worked
for my Neon.