Yes if the thermostat doesn't close coolant will not reach normal operating temperature - therefore vehicle will run cold and not produce adequate cabin heat
One Coolant Hose is hot and thew other is cold...
i think the reason might be your cooling system, check the basics. the basic would be to see if there is low coolant in your engine when it is cold and in the radiator. If that is fine then check the thermostat located in your cars engine. It might be open and not checking your cars temperature right or might need to get replaced.
The thermostat in a car regulates the coolant temperature inside the engine. When the engine is cold, the thermostat is closed, allowing the heat from the combustion chamber to heat the fluid (coolant) in the coolant galleys in the engine block. Once the engine reaches an optimal temperature, the thermostat opens, allowing coolant to flow through the radiator. The thermostat then controls the flow of coolant to hold the engine at its optimum operating temperature, irrespective of engine load and operating condtions.
Could be low on coolant or a sticky thermostat.
The coolant sensor moniters the coolant temperature. A faulty thermostat could cause the engine to run cool.
No, the thermostat and the coolant bypass solenoid serve different functions in a vehicle's cooling system. The thermostat regulates the flow of coolant to maintain the engine's optimal operating temperature, while the coolant bypass solenoid controls the flow of coolant around the engine when it is cold. They work together but are not interchangeable components.
Probably low coolant or a faulty thermostat
The thermostat regulates coolant flow through the radiator by opening and closing based on the engine temperature. When the engine is cold, the thermostat remains closed to allow it to warm up quickly. As the engine heats up, the thermostat opens to allow coolant to flow through the radiator and dissipate the heat.
In cold weather, the temperature gauge may fluctuate as the thermostat regulates the temperature by turning the heat on and off to maintain the desired level of warmth in the house. This cycling on and off is a normal part of the heating system's operation to keep the indoor temperature consistent.
P0128-THERMOSTAT RATIONALITY When Monitored: The engine running. During cold start. Set Condition: The PCM predicts a coolant temperature value that it will compare to the actual coolant temperature. If the two coolant temperature values are not within 10°C (50°F) of each other an error is detected. Basically your thermostat has failed.
The engine coolant temperature sensor is probably at fault.
The thermostat is typically mounted on the engine block or in the coolant passage, and it controls the flow of coolant to and from the engine. When the engine is cold, the thermostat remains closed to allow the engine to heat up quickly. Once the engine reaches the desired operating temperature, the thermostat opens, allowing coolant to flow into the engine and maintain optimal temperature. Therefore, the thermostat itself does not move up or down but operates based on temperature changes.