I could try that dremd and probably will if I get a chance this weekend.
I did get an email back from Linear Logic. They said...
Quote:
The ScanGauge gets its information directly from the vehicle's ECU. You may be getting diferent temperature readings from the sensors being in different parts of the coolant system. If the ScanGauge is reporting wrong data, the only way it would be possible is if your vehicle is sending the wrong data to it.
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And, since the temp sensor is right next to the thermostat, there will be no variance between what the two see. So, I'm looking at how much a new sensor is. I'd be surprised if it went bad, but its possible.