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The temperature sender (the sensor that sends the temperature signal to the gauge) has to be immersed in coolant in order to correctly read the temperature. If the coolant is so low that it leaves the sender high and dry, the temperature shown on the gauge will not be a true reading.

if the sensor is not immersed in the coolant, there a big chance it wont read at all...

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โˆ™ 2010-12-10 16:27:04
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Q: Why would the temperature gauge read cold when the antifreeze is low?
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