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 MANUALSDODGE AND RAM1996CARAVAN L4-2.4L DOHCREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSDESCRIPTION AND OPERATIONFUNCTIONAL OPERATIONINPUTS AND OUTPUTSINPUTSENGINE COOLANT TEMPERATURE SENSOR
1996 Dodge and Ram Caravan L4-2.4L DOHC
Engine Coolant Temperature Sensor
1996 Dodge and Ram Caravan L4-2.4L DOHCSECTION Engine Coolant Temperature Sensor
Fig 15 Engine Coolant Temperature Sensor:
The engine coolant temperature sensor is a variable resistor with a range of -40°C to 129°C (-40°F to 265°F).
The engine coolant temperature sensor provides an input voltage to the PCM. As coolant temperature varies, the sensor resistance changes resulting in a different input voltage to the PCM.
When the engine is cold, the PCM will demand slightly richer air/fuel mixtures and higher idle speeds until normal operating temperatures arc reached.
The engine coolant sensor is also used for cooling fan control.
New sensors have sealant applied to the threads.
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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.