Re: Normal temp after shutting off Hemi
In order to transfer heat, one part needs to be cooler than the other. There is always some thermal lag and resistance in the metal between the combustion chamber and coolant. That means the metal near the combustion temperature is hotter than the coolant. When there is coolant flow, the coolant that has absorbed the heat moves out and is replaced. When you shut down, there is no coolant flow (in these engines, some others maintain flow). But the heat continues to be absorbed by the coolant until there is equilibrium (the metal and coolant are the same temp). The coolant temperature is now higher than it was. So, depending on sensor placement, you would expect the temperature sensor to indicate a higher coolant temperature after engine shut down, until the entire engine cools off.
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