How many thermostats are in a Dodge Avenger?
The Dodge Avenger typically uses a single thermostat in its cooling system.
This single thermostat regulates coolant flow to the radiator and helps maintain the engine at its optimal operating temperature. In most Avenger configurations, whether equipped with the 2.4-liter four-cylinder World engine or the 3.5-liter V6, the cooling system is designed around one thermostat located in the thermostat housing on the engine. For exact placement for your model year and engine code, consult the service manual.
Thermostat count by engine
The Avenger was offered with two main powertrains. Each uses a single thermostat to regulate coolant. Here are the common configurations:
- 2.4-liter World engine (4-cylinder) — one thermostat
- 3.5-liter V6 — one thermostat
Regardless of engine, the thermostat count remains one in stock configurations.
Common thermostat problems and symptoms
Recognizing a failing thermostat can save you from overheating or poor heating. Common symptoms include:
- Engine overheating or running hotter than normal
- Thermostat stuck open causing the engine to run cold and cabin heat to be weak
- Fluctuating temperature gauge
- Reduced or no heat from the cabin heater
- Coolant leaks at the thermostat housing or gasket
- Cooling system warning lights or codes related to temperature
If you notice these signs, have the cooling system inspected to determine whether the thermostat or related components need service.
DIY replacement: steps and cautions
If you plan to replace the thermostat yourself, follow these general steps. Note: Cooling system work can be hazardous; if in doubt, seek a professional mechanic.
- Ensure the engine is completely cool and disconnect the battery.
- Place a pan to catch coolant and drain part of the radiator coolant.
- Remove the thermostat housing bolts or detach the upper radiator hose to access the thermostat.
- Remove the old thermostat and gasket; inspect the housing surface for debris and clean as needed.
- Install the new thermostat in the correct orientation (the spring end typically faces the engine) and fit a new gasket or seal.
- Reinstall the housing and hoses, then refill the coolant and bleed air if required by your system.
- Reconnect the battery, start the engine, and check for leaks while the engine reaches operating temperature to verify the thermostat opens properly.
Concluding: With proper installation, the cooling system will regulate engine temperature effectively and provide reliable heat and performance.
Summary
In practical terms, the Dodge Avenger uses one thermostat across its common engines—the 2.4-liter four-cylinder and the 3.5-liter V6. If you’re dealing with cooling issues, verify thermostat health as part of a broader cooling-system inspection, and refer to the specific year and engine code for precise service procedures.
