How to test and replace the engine coolant temperature sensor for Cadillac ElDorado and Fleetwood?

The engine coolant temperature sensor, a thermistor in the coolant stream, varies resistance with temperature. The PCM uses a 5-volt signal to determine the coolant temperature based on this resistance. Testing requires comparing resistance to a chart and checking against an automotive thermometer. If it's off-spec, replace the sensor. Located near the thermostat housing, ensure coolant is drained before removal. Coat the new sensor with thread sealant, tighten to the recommended torque, refill coolant, and reconnect the battery cable.

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9 Coolant Temperature Sensors found

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Cadillac Eldorado Sensor,Engine Coolant Temperature
Part Number: 15326386
- Other Name: SENSOR, Computer Control Sensors
- Replaces: 25036979, 12146312
$26.35 MSRP: $49.72
You Save: $23.37 (48%)

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Fits the following Vehicles:
1985-2002 Cadillac Eldorado | COMMERCIAL CHASSIS, ELDORADO | 8 Cyl 4.1L, 8 Cyl 4.5L, 8 Cyl 4.6L, 8 Cyl 4.9L, 8 Cyl 5.7L Diesel
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Cadillac Eldorado Sensor Asm,Engine Coolant Temperature Gage
Part Number: 10045847
- Other Name: SENSOR, Computer Control Sensors; Coolant Sensor
$34.43 MSRP: $71.52
You Save: $37.09 (52%)

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Fits the following Vehicles:
1982-1985 Cadillac Eldorado | BIARRITZ, COMMERCIAL CHASSIS, ELDORADO | 6 Cyl 4.1L, 8 Cyl 4.1L
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Cadillac Eldorado Sensor, Temperature Gauge
Part Number: 25036628
- Other Name: SENSOR, Coolant Temperature (Engine Unit)
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Fits the following Vehicles:
1982-1985 Cadillac Eldorado | BIARRITZ, COMMERCIAL CHASSIS, ELDORADO | 8 Cyl 5.7L Diesel
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Cadillac Eldorado Sensor Assembly, Engine Wtr Temperature(1 Terminal)
Part Number: 8993146
- Other Name: SENSOR; Temperature Sending Unit
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Fits the following Vehicles:
1982-1985 Cadillac Eldorado | BIARRITZ, COMMERCIAL CHASSIS, ELDORADO | 8 Cyl 5.7L Diesel
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Cadillac Eldorado Switch Asm,Engine Metal Temperature Indicator
Part Number: 25036582
- Other Name: SWITCH, Coolant Temperature (Engine Unit); Temperature Sending Unit
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Fits the following Vehicles:
1982 Cadillac Eldorado | ELDORADO | 8 Cyl 5.7L Diesel
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Cadillac Eldorado Switch Unit
Part Number: 25036587
- Other Name: SWITCH, Coolant Temperature (Engine Unit)
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Fits the following Vehicles:
1982 Cadillac Eldorado | ELDORADO | 6 Cyl 4.1L
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Cadillac Eldorado Switch Pkg, Coolant Temperature
Part Number: 25036371
- Other Name: SWITCH, Coolant Temperature (Engine Unit); Temperature Sending Unit
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Fits the following Vehicles:
1982-1985 Cadillac Eldorado | BIARRITZ, COMMERCIAL CHASSIS, ELDORADO | 6 Cyl 4.1L, 8 Cyl 5.7L Diesel
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Cadillac Eldorado Switch Asm,Engine Metal Temperature Indicator
Part Number: 25036588
- Other Name: SWITCH, Coolant Temperature (Engine Unit); Temperature Sending Unit
More Info
Fits the following Vehicles:
1982-1985 Cadillac Eldorado | BIARRITZ, COMMERCIAL CHASSIS, ELDORADO | 8 Cyl 5.7L Diesel
Less Info
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Cadillac Eldorado Switch Asm
Part Number: 25036586
- Other Name: SWITCH, Coolant Temperature (Engine Unit); Temperature Sending Unit
More Info
Fits the following Vehicles:
1982-1987 Cadillac Eldorado | BIARRITZ, COMMERCIAL CHASSIS, ELDORADO | 8 Cyl 4.1L
Less Info

Cadillac Eldorado Coolant Temperature Sensor Parts Questions & Answers

Sensor,Engine Coolant Temperature
15326386
Q: How to test and replace the engine coolant temperature sensor for Cadillac ElDorado and Fleetwood?
A: The engine coolant temperature sensor, a thermistor in the coolant stream, varies resistance with temperature. The PCM uses a 5-volt signal to determine the coolant temperature based on this resistance. Testing requires comparing resistance to a chart and checking against an automotive thermometer. If it's off-spec, replace the sensor. Located near the thermostat housing, ensure coolant is drained before removal. Coat the new sensor with thread sealant, tighten to the recommended torque, refill coolant, and reconnect the battery cable.