Shain, Eric and group, The thermistor starts off at about 10,000 ohms cold. It's 41Degrees this morning, so in my storage containers, that was the start. If you just hold it in you hand while taking a reading, the ohmage will drop. Be sure to use a good digital VOM, some of the older and cheaper analog meters may load the circuit to much. Measure right across the terminals. John http://www.specialtauto.com/