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 MANUALSCHEVROLET1983CAPRICE V6-229 3.8L VIN 9 2-BBLREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSCOOLANT TEMPERATURE SENSOR/SWITCH (FOR COMPUTER)DESCRIPTION AND OPERATION
1983 Chevrolet Caprice V6-229 3.8L VIN 9 2-bbl
Coolant Temperature Sensor/Switch (For Computer): Description and Operation
1983 Chevrolet Caprice V6-229 3.8L VIN 9 2-bblSECTION Description and Operation
This switch--located in the cooling system--is used on 1982 minimum function systems--4 cyl./98 cid except All W/5 speed manual trans and CA W/4 speed manual trans.
- When coolant is cold, switch contacts are open, and when coolant is warm (above calibration point), contacts are closed.
- The ECM uses this switch to determine MC solenoid dwell.
NOTE: Once switch contacts close, opening the contacts with the engine running will have no effect.
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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.