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The first thing is you will find that you have no heat or defroster. The temp Gage will rise, but the radiator will not overhead. You will also get the radiator fan to kick in sensing the block temperature. You can carefully and slowing open the radiator and the water may either be cold or Luke warm, but your temp Gage is on the hot mark. The thermostat seems to be a real weak link and is connected by (3) hoses, if it is closed than no circulation occurs.

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Q: How can you tell if your car's thermostat is not working?
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Related questions

How do you check to see if my cars thermostat is working?

Take it out and dunk it in boiling hot water. If it opens it'a working.


How can you tell if thermostat is working properly?

It will keep the temperature within pre-set limits if working properly.


What cars have to have a thermostat?

All cars need a thermostat for proper operation and longevity.


Do all cars have a thermostat?

All cars that are water cooled (i.e. they have a radiator) must have a thermostat.


How can you tell wheather the radiator or the thermostat is not working because my car has a very serious problem with it overheating?

Take your thermostat out and put everything back together, run your car without a thermostat... If your car no longer overheats, replace your thermostat.


Is my Home Heat Pump thermostat working?

A person can tell if their home heat pump thermostat is working by setting the temperature a few degrees above or below ambient to see if it kicks on. A thermometer can be used to verify the temperature.


Is there a thermostat on a 2000 Mercury Sable LS?

There is a thermostat on all cars.


How do you know your cars thermostat is not working properly?

usually, after you start your vehicle, if it doesn't take long for the temp. to rise past the normal position, and your car is full of water. It's probably the thermostat faulty. terry.stone21@yahoo.com.


How do you replace the thermostat located on a 1992 Mazda 929?

On most cars the thermostat is on the top hose, but not this one. Find the bottom large hose and trace it up, there you will find three bolts to remove the lower cup that holds the thermostat. Be carfull because the uperhose has water in it, and your working right below it.


How do you know on a 1997 Toyota Tacoma V6 if the thermostat is open and working?

An engine scanner will give you exact water temperature and gauging by it you can tell.


Were is the thermostat?

NEED to know what you are working on.


How do you know if your thermostat is broken?

if its not working.