Yes
When in doubt, throw it out. If there is any doubt the thermostat may be bad, just replace it with a new one. If you insist on testing it, you can drop it into a small pot of water and heat it up on the stove. A 195 degree thermostat should open just before the water boils.
A bad thermostat could be stuck open or stuck closed. Drop it in boiling water and it should open. Then close when cooled off.
Hi,....to test the Thermostat......wait until it is cold....you will find it closed.....drop it into a cup/dish of boiling water.....and if its working correctly,you will see it open.
Thermostat-Open-95 degree C Fully open-130 degree C
Thermostat will open sooner car may not necessarily run cooler
The 160 thermostat should open about 20 degrees sooner than a 180.
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
when the thermostat will not open when placed in a cup of boiling water
Thermostats range in temperature from 175-205 degrees. Choose a 195 degree thermostat and you'll be fine.
thermostat is stuck OPEN, never allowing coolant to warm up
You may need to get a lower temperature thermostat, they come in various settings ie 160 degrees, 140 degrees ect. If the water temperature gets to that degrees then the thermostat opens. You may have an engine that needs a lower degree one.
Remove the thermostat from vehicle. Heat up a pot of water on the stove, insert thermometer in the water along with the thermostat, be sure to fill pot of water to cover thermostat. When temp reaches operating level (180 / 195 ) should be able to visually see thermost open. Get tongs and pull thermostat out of water. When it cools down you should see it close.