My 1997 honda civic ex idles and sometimes turns off when I slow down or when I come to a complete stop. But if I press on the gas pedal the car will not turn off. What can I do to fix this problem? Please help.

Check idle speed. See if this helps:

https://www.askmehelpdesk.com/cars-trucks/faq-how-troubleshoot-repair-maintain-honda-civics-46563.html#post219948