Why is my 2015 f150 still vibrating under the truck and my engine is overheating

Hello, the best advice I can offer is to seek guidance where you and the work recently performed. There is way too much going on here that can't be discussed or explained in the detail necessary to provide good information without hands on inspection of the vehicle. Why did the catalytic converter get replaced in the first place? What does it mean that the vehicle is vibrating? What indicates to you that the engine temperature is too high? You just need to build a local relationship with the shop you used, or perhaps even a new shop - Use this link to find some shops near you that can help with your concern: www.repairpal.com/repair-shops