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Thermostat ID

430 Views 4 Replies 4 Participants Last post by  baabootoo
How do I check what kind of thermostat is installed on a used car without opening everything up?

can I just run hot and see if it returns below 180 or just under 200? Or is that not the best way?
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Warm vehicle to operating temps and drive freeway speeds very light load with reasonable outside temps. The coolant temp should settle close to thermostat temp after a few minutes of driving. If Track mode turns the fans on high, this will also help you testing.
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