I was wondering how I do the following:
1.) How to test the gauge and ecu coolant temperature sensors while they are in the thermostat stat housing using a multimeter. Exact settings on the multimeter is appreciated. I suspect my gauge sensor is toast.
2.) How do I test the wires that plug into these two sensors so I know they are still good? My logger showed varying temps while driving recently and I suspect faulty wiring or bad plug.