Why does my 2005 chrysler town and country

Have you ever done a fuel injection cleaning, other than a bottle in the gas tank? There is a butterfly in the intake that gets gummed up. Take the intake hose off, get a can of fuel injection cleaner, (Not Carb Cleaner) and spray it all down, soak it good and use a clean rag. Have some one push the peddle down to open the butterfly, and clean it out real good, use plenty of cleaner, put it all back together and run it for a few minutes. See if that helps.