Engine Coolant Temperature Sensor Description

1994 Plymouth Laser FWD L4-1997cc 2.0L DOHCSECTION Engine Coolant Temperature Sensor Description
Location
The coolant temperature sensor is located in the thermostat housing.

Coolant Temperature Sensor:






Construction
The Coolant Temperature Sensor is a thermistor type sensor.

Coolant Temperature Sensor Circuit:






Operation
As engine temperature increases, sensor resistance decreases. The ECM monitors engine temperature by the sensor output voltage and provides optimum fuel enrichment when the engine is cold.




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:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.