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Checking a temp guage

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M

markctr3

Senior Member
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If I check the mechanical sending unit that screws into the thermostat housing with a pyrometer, should that give me the same temperature reading as the gauge in the dash?
 
More or less. Expect some margin of error -- maybe 5 degrees or so.
 
You can probably improve the readings from the pyrometer by cleaning a spot on the thermostat housing and painting it with a spot of satin black paint before your measurements.
 
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