The gauge should be showing a minimum 195 with engine warmed up. I would start with replacing the thermostat.
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Hythergraph is a plotted graph showing the relationships between precipitation and temperature.
Sounds like your coolant is low or your coolant level sensor could be sticking closed after the coolant was low. with the dexcool coolant it becomes thick and cause the sensor to stick closed.
Could be a failed engine coolant temperature sensor. Easy enough to replace and not too expensive.
The curve showing the relationship between temperature and time for a given amount of liquid heated at a constant rate is called a "heating curve." This curve is mapped out on a graph.
The curve showing the relationship between temperature and time for a given amount of liquid heated at a constant rate is called a "heating curve." This curve is mapped out on a graph.
Have you had the coolant temp sensor checked? It might be that the engine is running hot but the sensor isn't showing the temp is hot.
Eather temp senser or thermostat.
If you are not getting heated air blowing from the heater core and your engine coolant temperature gauge is showing LOW or below normal , ( then YES , IT'S POSSIBLE that your engine cooling thermostat is sticking open )
An isotherm is a line showing equal temperature.
Either the coolant level is low and needs topping up, or more likely that the sensor is faulty. Experience shows that for ever 10 cars with that showing 9 have a fault with the sensor. Check the level anyway!
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