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Coolant Temperature Sensor

  1. Remove coolant temperature sensor. Coolant temperature sensor is located on thermostat housing.
  2. Measure resistance of coolant temperature sensor at designated temperatures. Replace if not within specification. See COOLANT TEMPERATURE SENSOR RESISTANCE  table.
COOLANT TEMPERATURE SENSOR RESISTANCE

Temperature °F (°C) Ohms
-40 (-40) 100,700
0 (-18) 25,000
20 (-7) 13,500
40 (4) 7500
70 (21) 3400
100 (38) 1800
160 (71) 450
210 (99) 185