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Engine Coolant Temperature (ECT) Sensor

Disconnect ECT temperature sensor connector. Set DVOM to 200 k/ohm scale. Measure resistance across sensor terminals. See the ECT SENSOR RESISTANCE/VOLTAGE  and Figure for resistance specifications.

ECT SENSOR RESISTANCE/VOLTAGE

Sensors °F (°C) Specifications Volts (K Ohms)
ECT Sensors
248 (120) .27 (1.18)
230 (110) .35 (1.55)
212 (100) .46 (2.07)
194 (90) .60 (2.80)
176 (80) .78 (3.84)
158 (70) 1.02 (5.37)
140 (60) 1.33 (7.70)
122 (50) 1.70 (10.97)
104 (40) 2.13 (16.15)
86 (30) 2.60 (24.27)
68 (20) 3.07 (37.30)
50 (10) 3.51 (58.75)