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Low Engine Temperature, Poor Fuel Mileage, Low Heater Temperature, possibly transmission shifting problems/and or no high gear in Automatics. Fix it!

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Q: What are the symptoms if thermostat is stuck open?
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Can an automobile thermostat stick open?

Yes they can stick open or closed. An automobile thermostat is just as likely to stick open as it is to stick shut. Symptoms of a stuck open thermostat are slow to reach normal operating temperature and only warm air blowing from the heater. Symptoms of a stuck closed thermostat are engine over-heating and radiator boil-over.


What are the symptoms of a bad thermostat in a sonoma pickup?

If it is stuck closed, the engine will overheat. If it is stuck open, the engine will take a long time to reach operating temp.


What is Symptoms of bad thermostat?

If stuck closed--vehicle will overheat very rapidly and coolant will blow out of top of radiator If stuck open--vehicle will not get to normal operating temp.


Can a car overheat with a stuck open thermostat?

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


What symptoms means your 2004 Toyota Sienna needs a new thermostat?

Little or no heat from heater/defrost if t-stat is stuck open. Engine overheats if t-stat is stuck closed.


Why do you lose heat driving down the road in a ford f 150 you have heat when it is idling but lose it driving?

Thermostat is stuck open Thermostat is stuck open


Car not warming up?

thermostat can be stuck open


A stuck thermostat usually has the following symptom?

Overheating if stuck closed, no engine heat if stuck open.


Why is my car over cooling?

Could be a stuck open thermostat.


Why does sable engine run cold?

Stuck open thermostat.


How do you know when to change your thermostat on a 1995 camaro z28 LT1?

A thermostat can be stuck open or closed. If the engine runs to cool it is stuck open. If the engine is running hot it is stuck closed. If you don't have these problems you should'nt have to change it.


How do you know if your thermostat is shot?

If the engine is overheating, the thermostat is stuck closed. If the heater is not putting out enough hot air the thermostat is stuck open. Change the thermostat as a normal part of maintenance when changing coolant.