Description
The cooling system regulates engine operating temperature, allowing the engine to reach normal operating temperature quickly, maintaining normal operating temperature, and preventing overheating.
The cooling system also provides a means of heating the passenger compartment.
Cooling System Components
The cooling system consists of various components, including a charge air cooler, electric cooling fan, engine driven fan, aluminum-core radiator, coolant recovery container, and more.
Operation
The cooling system is pressurized and uses a centrifugal water pump to circulate coolant throughout the system.
Deaeration
Air can only be removed from the system by gathering under the pressure cap. Multiple thermal cycles of the system may be required to deaerate the system effectively.
Diagnosis and Testing
The Powertrain Control Module (PCM) monitors certain cooling system components, and a Diagnostic Trouble Code (DTC) can be set if a problem is detected.
Various procedures are outlined for diagnosing and testing the cooling system, including deaeration, flow checks, and preliminary checks for engine overheating.
Manual:
Download: 2007 Dodge Nitro RIT 2007 ENGINE Cooling Nitro
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