Outside air temp sender relocation
The outside air temp sensor is typically located behind the grille on the cross brace alongside the transmission cooler. This location choice is particularly poor when a cold front is used as it can be highly influenced by radiator, transmission cooler and other heat sources.
To make this more accurate, I moved the sensor to the location above on my 2005. There is a similar sensor on the passenger side so this location just made sense.
On my 2002, I moved it to the upper LH corner of the plastic splash plate. The key is to isolate it as well as possible from the influences of underhood air, and headlamp heat as well.