Thermostat replacement on Ford 4.6L engine between 1990-2014 & things to check before changing it

As with all my videos I try to give the most information in the least amount of time as possible, so I don’t waste your time. In this video I go over some things to look for before changing a thermostat. I go over some reasons you might get a code po128 and possible repairs for that code. I go over how to replace a thermostat on a 4.6L engine in a 2011 Lincoln grand marquee however should be the same concept on any 4.6L between the years 1990-2014 on a variety of Ford,Mercury,and Lincoln vehicles such as mustangs, f series pickups, SUV’s, etc.