Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSEAGLE1994SUMMIT WAGON AWD L4-1795CC 1.8L SOHCREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSCOOLANT TEMPERATURE SENSOR/SWITCH (FOR COMPUTER)TESTING AND INSPECTION
1994 Eagle Summit Wagon AWD L4-1795cc 1.8L SOHC
Coolant Temperature Sensor/Switch (For Computer): Testing and Inspection
1994 Eagle Summit Wagon AWD L4-1795cc 1.8L SOHCSECTION Testing and Inspection
TROUBLESHOOTING HINTS
Suspect the coolant temperature sensor or sensor circuit if fast idle speed is inadequate or the engine emits dark smoke during engine warm up.
SENSOR INSPECTION
CAUTION: Be careful not to touch the tool against the resin section of the connector when removing and installing.
1. Remove engine coolant temperature sensor from the intake manifold.
2. With temperature sensing portion of engine coolant temperature sensor immersed in hot water check resistance
Temperature °C (°F) Resistance in k ohms
0 (32) 5.8
20 (68) 2.4
40 (104) 1.1
80 (176) 0.3
3. If the resistance deviates from the standard value greatly replace the sensor.
INSTALLATION
1. Apply sealant to threaded portion.
- Specified sealant: 3M NUT locking Part No. 4171 or equivalent
2. Install engine coolant temperature sensor and tighten it to specified torque.
- Sensor tightening torque: 30 Nm (22 ft lb)
3. Fasten harness connectors securely.
HARNESS INSPECTION
INSPECTION USING SCAN TOOL
Suspect the coolant temperature sensor or sensor circuit if fast idle speed is inadequate or the engine emits dark smoke during engine warm up.
SENSOR INSPECTION
CAUTION: Be careful not to touch the tool against the resin section of the connector when removing and installing.
1. Remove engine coolant temperature sensor from the intake manifold.
Engine Coolant Temperature Sensor:
2. With temperature sensing portion of engine coolant temperature sensor immersed in hot water check resistance
Temperature °C (°F) Resistance in k ohms
0 (32) 5.8
20 (68) 2.4
40 (104) 1.1
80 (176) 0.3
3. If the resistance deviates from the standard value greatly replace the sensor.
INSTALLATION
1. Apply sealant to threaded portion.
- Specified sealant: 3M NUT locking Part No. 4171 or equivalent
2. Install engine coolant temperature sensor and tighten it to specified torque.
- Sensor tightening torque: 30 Nm (22 ft lb)
3. Fasten harness connectors securely.
HARNESS INSPECTION
INSPECTION USING SCAN TOOL
Engine Coolant Temperature Sensor:
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.