I am a new owner of a 2015 Ford Fiesta ST. I bought a used one and I love it more than anything I have ever drove. Sadly I am having one problem with it. When I slow down, I put it into neutral. when I do so, the car shuts off on me. then I cant get the car to turn over to start driving again or if I do, it takes forever to turn over. my guess is the purge valve is going bad. if anyone has any input about the problem and what it might be and how to fix it, please let me know!!