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Engine Coolant Temperature (ECT) Sensor Problem
I replaced the Engine Coolant Temperature (ECT) Sensor on 2001 Excursion 7.3L PowerStroke and the factory temp gauge stays bottomed out at "C".
The sensor is new and it seems to work fine - at running temperature the new sensor reads 3.66Kohms. When engine is cool it reads somewhere around 8.0Kohms. Although I'm not convinced that it is necessary, I did take a jumper wire from the brass fitting on the sensor to the engine block - it did not help. Also, when I take the connector off of the sensor and apply a low resistance (100 Ohms) the temp gauge rises to just over normal running needle position. What can go wrong - thread in the sensor and plug the connector on right? Can anyone help?