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How to tell if my engine is really overheating?

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My dash started saying engine hot ac off but the warning light is off still what could be wrong

I have a 06 impala 3.5L with 122,000 miles and the dash says engine hot ac off. The temp light is off but, the warning gauge stays at cold. I already changed the connection point and the temperature sensor replaced  

2 Answers
4

To verify coolant temperature you could use an infrared thermometer aimed at the thermostat housing (that's usually where the sensor is) or the upper radiator hose.

3

First check the coolant level.

Have you changed the thermostat?

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