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Home >> Geo >> 1991 >> Tracker Base, RWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests >> Engine Sensors & Switches >> Coolant Temperature Sensor
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Coolant Temperature Sensor

  1. Remove coolant temperature sensor. Sensor is located on right side of engine, below upper radiator hose.
  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
0 (-18) 14,650
20 (-7) 8100
40 (4) 4780
70 (21) 2500
100 (38) 1250
160 (71) 400
210 (99) 190