Originally Posted by Pacnorthcuda
Originally Posted by trw1982
those are fail safe type t-stats. when eng tries/starts to overheat, the tabs are extended in order to keep the eng from sever overheating.


You are correct. https://motorad.com/tech-tips/fail-safe-thermostats/

So in reading their explanation of that design I can understand their intended goal, but my vehicles werent overheating, never have, if anything I've struggled to get good heat into the equation, even with all new cooling system components, I've even posted about that a couple years back. shruggy
Anyway, thanks for the explanation guys! thumbs