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.
2021 Dodge and Ram ProMaster 2500FACTORY OEM SERVICE PROCEDURE
Sensor, Coolant Temperature: Installation
- Apply MOPAR® thread sealant with PFTE to sensor threads.
- Install the coolant temperature sensor (1) into the cylinder head and tighten to the proper torque specification. Refer to TECHNICAL SPECIFICATIONSÂ .
- Connect the coolant temperature sensor wire harness connector.
- Remove support and lower the vehicle.
- Fill the cooling system. Refer to STANDARD PROCEDUREÂ .
- Connect the negative battery cable.
Factory Service Tools
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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.