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They will get full of crud and start to stick.

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Q: Why does a car thermostat fail?
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Related questions

Is car thermostat necessary in a tropical temperature?

is car thermostat necessary in a tropicalize car?


Would a thermostat cause an o2 sensor to fail?

Not directly.


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.


Would the thermostat cause the car not to start in a 2001 Monte Carlo?

no, the thermostat would have nothing to do with the car not starting.


Why does the temperature gauge on your car fluctuate?

The temperature gauge on a car fluctuates because the car's thermostat is opening and closing. The gauge goes up when the thermostat closes and the gauge goes down when the thermostat opens.


Why would a car thermostat jump around?

Must be sticking, replace the thermostat.


The element in a thermostat that is sensitive to temperature changes is what?

In a car thermostat the element is wax


How do you tell if its the water pump or a hose leakin?

The issues are very different. Water pumps fail because they start leaking through the front seal. The plugged or non functioning thermostat fails by causing serious overheating of your engine. If it fails open, you get little heat.Radiators start getting old and you will see that they seem to be ok in cool weather but on warmer days you find the car runs warm. Removing the thermostat does not resolve this issue.The main purpose of a thermostat is to get quicker heat in your car. Most cars will run with on thermostat installed. If your car still is getting warm, it is a good chance your radiator is plugged.Water pumps almost never fail in any mode other then leaking. If you take the thermostat out and start your car, you should see coolant movement. If you do, the pump is fine.


How often you change a thermostat on a Chevy trail blazer?

Basically: when they are faulty.The original Thermostat on your Trail Blazer should last longer than the warranty, so 60,000 miles or more.Then the fun starts.There are poor quality cheap Thermostats out there that tend to not last longIf the cooling system is not maintained well and the car runs hot due to problems other than the thermostat the thermostat will fail immediately.If the wrong temperature rating is used the part will fail or not operate correctlyA cooling fan that is broken or not running correctly.ADVICE:Use a GM/DELCO brand part purchased from the dealer and watch for a hot running engine that will damage the thermostat.


Can a car overheat with a stuck open thermostat?

Usually the car would run cool, unless the thermostat is stuck partially open.


How do one change the thermostat on Chevy car?

One can change the thermostat on a Chevy car by draining the coolant and disconnecting the upper radiator hose. The thermostat housing is then unbolted, the old thermostat removed, and a new unit placed in the housing.


Your car has overheated twice in the past couple days - so hot the coolant was boilingwhat could cause the coolant to boil?

Thermostat fail to open. Waterpump is on the deathbed. None, or not enough Anti-freeze in radiator.