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How can a thermostat fail?
Explain how a thermostat can fail.
Explanation of Solution
A thermostat can fail in the following four ways.
- Stuck open.
- Stuck closed.
- Stuck partially open.
- Skewed.
Stuck open:
A thermostat can fail when open or partially open because the normal temperature of the engine will be higher than the operating temperature.
Stuck closed:
The thermostat can fail when closed or almost closed because the engine will start to overheat.
Stuck partially open:
The thermostat can fail when partially open because the engine will start to warm up gradually indicating that the coolant temperature of the engine will not attain the desired temperature.
Skewed:
The thermostat can fail when skewed because the engine could overheat or function cooler than regular, or even perform both.
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