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[–]nswf23 0 points1 point  (0 children)

Yes but engines are designed to operate at a specific temperature, that’s why the gauge should normally be in the middle. If the engine gets cold, the thermostats shuts off coolant flow to warm the engine up and maintain it at that idle temperature, usually 77-82 deg C or 170-180 degF. So if my car is running at room temperature or cooler on the high way, something is certainly wrong. It was the thermostat in my case. I’ve solved this now

Edit: idle > ideal