(Pt 2) Ford Crazy RATTLE...4x4 MALFUNCTION: Solved! ('18 F150 EcoBoost)

Next Day after diagnosing and repairing the Brake Pad Rattle, the BIG Rattle FINALLY shows up! Seems to happen at light Turbo Boost below 2k rpm... Definitely has to do with loss of Vacuum at the Front Axle Disconnect system. Let's perform some Vacuum Diagnostics with a Vacuum Pump and the PHAD Pressure Transducer. But as soon as I hook up the Transducer, the problem DISAPPEARS?? IVAN'S PICO WAVEFORMS: https://drive.google.com/drive/folder... TOPDON Phoenix Plus: https://www.amazon.com/dp/B091BQNR3S?... VACUUM PUMP: https://www.amazon.com/dp/B094CV2KPQ?... Enjoy! Ivan