For the cost of a new one, if you suspect it might be bad just replace it.
Of course a water heater thermostat would be defective as water heaters / hydronic boilers would use an Aqua Stat
A defective thermostat.
Low coolant?Cooling fan not working?Defective thermostat?Radiator clogged or air flow resitricted?Defective radiator cap?Defective water pump?Airbound? Low coolant?Cooling fan not working?Defective thermostat?Radiator clogged or air flow resitricted?Defective radiator cap?Defective water pump?Airbound?
a. blown headgasket. b. defective thermostat. c. defective radiator. d. no oil, no coolant.
Engine will overheat or not get warm enough. As in the heater will only put out warm air. When you suspect that the thermostat may be defective, just replace it. Very inexpensive part.Engine will overheat or not get warm enough. As in the heater will only put out warm air. When you suspect that the thermostat may be defective, just replace it. Very inexpensive part.
U take the thermostat out, get a pot of water, put the thermostat in it and start it to boiling. When the water reaches the temp that the thermostat is designed to operate at it should open , if not , it is defective
The Coolant Temperature sensor is defective.
Low coolant?Cooling fan not working?Defective thermostat?Defective radiator cap?
Thermostat and/or heater core may be defective
Thermostat and/or heater core may be defective
May be a defective thermostat or heater core
Stuck Thermostat, clogged radiator, defective water pump, defective fan, fan relay, or blown fuse. A defective radiator cap will in some instances make the car to appear to be overheating.