Hello, I'm Danny.
It is always recommended to replace the thermostat when the cooling system is being worked on and or mileage.It is also possible when replacing it wasn't installed correctly.There is a jiggle valve used as a reference to how being correctly installed.Here is a tutorial showing what is involved on replacing a thermostat:
https://www.2carpros.com/articles/replace-thermostat
I've attached picture instructions below including jiggle valve location for your Maxima below.Hope this helps and thanks for using 2CarPros.
Images (Click to make bigger)
SPONSORED LINKS
Saturday, May 9th, 2020 AT 6:23 PM