New Thermostat designs?

NickD

wrench
Joined
Aug 28, 2007
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Thermostat on my 2017 Elantra went bad temperature gauge stayed at zero, son just came over with his 2014 Chrysler T&C with his CEL lamp on.

Hook up my scanner, P0128 code number, his coolant temperature was way low, doesn't have a temperature gauge. Thermostat is stuck opened.

For years with these wax filled thermostats, if that wax container leaked, thermostat would stay closed, your engine would over heat. Guys that pushed it would end up with cracked aluminum heads, $$$$$$.

Haven't looked into these new designs, but apparently when going bad the thermostat goes open instead of staying closed.

Just me going over the hill or are you experiencing the same phenomenon? Anyway, after a hundred or so years, about time they changed this design. Recalled many times being stuck some God forsaken place with an over heated engine.
 
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