This video shows how to replace the thermostat on a Saab 9-3 model year 2004 and later. Some of the symptoms you may see that are a result of a faulty thermostat are:
– Engine overheating (although there can be other reasons for this such as a failed water pump, not enough coolant, blocked coolant passages e.g., in the radiator, etc.)
– Engine heating up really slowly to the operating temperature (which is the opposite of the first example and is a result of how the thermostat fails – i.e., open vs closed position). The thermostat failing in this manner is preferred from a design perspective as it does not create a risk of a catastrophic engine damage through overheating that can occur in the first example.
– The heat in the cabin takes “forever” to start blowing warm air. This is really a subset of the second example (but can be caused by other issues, such as blocked cabin heater body etc.)
Keywords: Autos & Vehicles, Saab, thermostat, 9-3, Saab 9-3, replace thermostat, How to replace thermostat, Maintenance, Car Maintenance, Car Repair, Repair
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Thnx for sharing!