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 MANUALSPLYMOUTH1984HORIZON L4-97 1.6L SOHCREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSCOOLANT TEMPERATURE SENSOR/SWITCH (FOR COMPUTER)DESCRIPTION AND OPERATIONENGINE COOLANT TEMPERATURE SENSOR DESCRIPTION
1984 Plymouth Horizon L4-97 1.6L SOHC
Engine Coolant Temperature Sensor Description
1984 Plymouth Horizon L4-97 1.6L SOHCSECTION Engine Coolant Temperature Sensor Description
The coolant sensor, located on the thermostat housing, gives the computer information on engine temperature. A signal is supplied to the computer which will cause the spark plugs to fire at a fixed amount of advance during cranking only. Amount of advance is determined by the position of the start pick-up coil. The run pick-up coil functions the same except that its signal is not recognized during engine cranking.
RENDER: 1.0x
NO RELATED
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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.