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Coolant temp sensor short form?

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It tells the computer what the temperature of the engine coolant is...to aid in fuel trim calculations, cold starts, and if the thermostat is working properly. It may also be used by other systems, like heating and air conditioning.

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First answer by AutoServiceTech. Last edit by AutoServiceTech. Contributor trust: 54 [recommend contributor]. Question popularity: 11 [recommend question]

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