Open is fine as others have stated, the only thing is that since your car will not reach the ideal operating temp, (yes, you can overcool a car) your gas milage will take a hit becuase the ECU thinks the engine is still trying to warm up. my friend drove his car for 4.5 YEARS with stuck-open thermostat…
If your Trailblazer has no heat at all, it is entirely possible that the thermostat is stuck open. When this happens, coolant constantly cycles through the engine. On very cold days, this cooling capacity is not needed, and the engine never warms up.
Thereof, Can a stuck open thermostat cause rough idle?
Yes, if the thermostat is stuck open, the engine may not reach normal operating temperature, and it might idle faster than it should, but it should still idle smoothly, unless there is an additional problem. Most cars idle faster when the engine is cold.
Also to know is, Can a bad thermostat cause rough idle? A thermostat will not cause your car to idle rough.
Subsequently, question is, Is it OK to drive with a thermostat stuck open? If it is failed in a closed position then you cannot really drive it with the thermostat broken, as the engine would overheat. … If the thermostat is stuck open then it is not preventing the flow of water and the coolant is not going to warm up as fast.
Also, How long can I drive with a broken thermostat?
Yes, but not for very long. Thermostats typically “fail closed,” which means your coolant won’t circulate and you’ll overheat very quickly. I wouldn’t – even removing the thermostat is better than leaving a failed thermostat in place (it will take longer to warm up, but it won’t overheat on you!)
What happens if thermostat is stuck open?
Thermostat stuck open: When the thermostat is stuck open, the engine temperature drops below normal when driving, especially on the highway in cold weather. A stuck-open thermostat can also cause lack of heat from the heating system. The Check Engine light may come on too.
Is it bad to drive with thermostat stuck open?
If it is failed in a closed position then you cannot really drive it with the thermostat broken, as the engine would overheat. … If the thermostat is stuck open then it is not preventing the flow of water and the coolant is not going to warm up as fast.
Will a stuck thermostat cause overheating?
If the thermostat becomes stuck in the closed position, the circulation of the coolant is blocked so the coolant cannot get to the radiator to be cooled which causes the engine to overheat.
Will a car overheat if the thermostat is broken?
A broken thermostat can also cause your car to overheat. The thermostat in your engine controls the flow of coolant. … If the thermostat fails, it can stick shut. This will keep the coolant from ever entering the radiator and your engine to overheat.
What happens if thermostat is stuck closed?
If the thermostat becomes stuck in the closed position, the circulation of the coolant is blocked so the coolant cannot get to the radiator to be cooled which causes the engine to overheat.
Can you drive a car with a bad thermostat?
Most automobile mechanics will tell you it is not a good idea to drive your car without a thermostat installed. If your thermostat becomes stuck in the closed position, though, this will cause your engine to overheat and make driving your car impossible.
How do you unstick a thermostat?
– Park your car on a flat surface and have the emergency brake on.
– Wait until the morning or a few hours after driving. …
– Open your car hood after your car has had some time to cool off. …
– Find the thermostat. …
– Remove the radiator cap. …
– Have someone else start the car for you.
What are the symptoms of a bad thermostat?
– Temperature gauge reading very high and engine overheating. The first and potentially most alarming symptom will be the temperature gauge reading high into the red within the first 15 minutes of your vehicle engine running. …
– Temperature changing erratically. …
– Coolant leaks around the thermostat housing or under the vehicle.
What are the symptoms of a stuck open thermostat?
If the thermostat becomes stuck in the open position, there is continuous flow of coolant into the radiator causing the engine to run cold. Overcooled engines run inefficiently, which leads to increased fuel consumption and higher emission levels and engine parts enduring more wear.
What does a broken thermostat do to your car?
When a Car Thermostat Begins to Fail Generally you’ll notice your vehicle begins to overheat soon after starting the engine, or the temperature gauge on your dashboard registers below or way above its normal temperature point.
What would cause a car to run rough at idle?
Bad spark plugs, bad spark plug wires and a bad distributor cap are other common causes of rough idling. These items are all important parts of what keeps a vehicle running. … A distributor cap regulates the firing order of your vehicle’s engine. These are just a few items that could cause a rough idle.
What are the symptoms of a bad home thermostat?
– Inaccurate temperature readings.
– Low battery warning failure.
– Malfunctioning furnace, air conditioner or total HVAC system.
– Poor interior temperature control.
– Lighting and energy efficiency issues.
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