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Temperature Sensor Fix Itself?

Dave Tidman
Dave Tidman

If you have not checked your coolant level, make sure it is full.

If you have a scanner with live data, it could be useful to see what the ECT is when the temp gauge is misbehaving. Also, the code for this problem may be a 2 trip code so that may be why it does not register immediately. It could also be an intermittent issue somewhere, those can be a bear to track down.

You can test an ECT sensor with water, a thermometer and an ohm meter. There are tables available that give the temperature/resistance relationship.

Good luck, let us know how it goes…