Sutcliffe Report post Posted July 3, 2018 This is in the Generator Compartment and appears to be a vacuum pump (small air exhaust). Entegra 2014 Aspire It is getting noisy and will probably fail soon at the worst possible moment. Thanks Mark Share this post Link to post Share on other sites
wolfe10 Report post Posted July 3, 2018 Yes, that is a vacuum pump that "powers" your dash HVAC system. Should be a PN on it. Probably a close relative to the very common one used on Ford diesel trucks. May be this one: https://www.amazon.com/Dorman-904-214-Mechanical-Vacuum-Truck/dp/B001KQF6PC/ref=sr_1_1?ie=UTF8&tag=foreforums-20&linkCode=as2&camp=1789&creative=390957 Share this post Link to post Share on other sites
