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.
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HOMESERVICE MANUALSCHEVROLET1985C 10 P/U 2WD V8-305 5.0LREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSCOOLANT TEMPERATURE SENSOR/SWITCH (FOR COMPUTER)DESCRIPTION AND OPERATION
1985 Chevrolet C 10 P/U 2WD V8-305 5.0L
Coolant Temperature Sensor/Switch (For Computer): Description and Operation
1985 Chevrolet C 10 P/U 2WD V8-305 5.0LSECTION Description and Operation
The coolant temperature sensor supplies coolant temperature information to the ECM. It is mounted in the engine coolant stream and has high resistance when the engine is cold and low resistance when the engine is warm. The ECM receives this information and controls the various systems that are dependent on temperature for proper operation.
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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.