Quick story... Bought used 2015 with 33,000 in Sept. 2017. In Oct. truck threw P04DB (CCV Code) so took it back to Ford. Ford did whatever they do, reset and said I should be good to go. Code threw again within 100 miles so back to ford I go. This time they said I needed new ccv vacuum pump (FC3Z-6A785-C). Thanks to this site I knew about the hall effect sensor on the manifold side.... OK makes sense. Problem was it is on national back order.... that was 5 months ago!! They told me to drive it until part was available but truck is noticeably louder and I've lost 1 mpg according to dash gauge. CEL has been on whole time, so besides not having remote start I'm concerned that if another problem pops up, I wouldn't even know. Part is available on internet for about $50. I'm about to fix it myself... but that's the reason I paid big money for the extended warranty so I wouldn't have to wrench on it. So is dealer blowing smoke up my ass, should I fix it, or just drive it and hope I don't start blowing seals. Frustrated!!