The 2018 Dodge Journey uses a single thermostat in its engine cooling system.
The question concerns how many thermostats the 2018 Journey has across its available engines and how this affects maintenance and cooling-system design. This article explains the usual configuration for the model year and what you should know if you’re servicing the vehicle.
What a thermostat does
A thermostat in a car regulates engine temperature by controlling coolant flow from the engine to the radiator. When the engine is cold, the thermostat stays closed to help the engine warm up quickly. Once the coolant reaches operating temperature, the thermostat opens to maintain a stable temperature and prevent overheating.
Thermostat count for the 2018 Dodge Journey
Across the 2018 Journey lineup, which offered two engines, the cooling system uses a single thermostat. The heater system relies on hot coolant from the engine but does not require a separate thermostat.
Engine options in 2018 Journey
The 2018 Journey was offered with two engine choices. Here they are:
- 2.4L Tigershark inline-4
- 3.6L Pentastar V6
In either case, there is one thermostat in the cooling system, not two separate thermostats for the engine and heater.
Maintenance considerations
When performing cooling-system work or replacing the thermostat on a 2018 Journey, technicians generally replace the thermostat as part of a broader cooling-system service. Use the correct OEM part for the engine variant and follow the service manual for torque specs, replacement procedures, and any coolant recharging steps.
Conclusion
Bottom line: The 2018 Dodge Journey uses a single thermostat in its engine cooling system, regardless of whether the vehicle has the 2.4L I4 or the 3.6L V6 engine. This single unit regulates coolant flow to maintain the engine at its optimal operating temperature.
Summary
In summary, there is one thermostat in the cooling system of the 2018 Dodge Journey across its available engines. For precise repair steps, consult the vehicle’s service manual or a certified mechanic. The heater does not require a separate thermostat.