Replace your faulty engine coolant temperature sensor with this Genuine Ford Motorcraft ECT Sensor, part number SW-2328 / F1SZ-10884-A, designed for 1994–1997 Ford 7.3L Powerstroke diesel engines. 1994.5–1997 Ford F-250 / F-350 / F-450 / F-550 – 7.3L Powerstroke.