Section 152 (Engine Cooling System): Operation: 2.4L/3.6L

WARNING: This page is about a different car, the 2016 Dodge Journey and 2015 Dodge Journey. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Cooling System Flow - 2.4L

Courtesy of CHRYSLER GROUP, LLC

COOLING SYSTEM FLOW - 2.4L

1 - WATER PUMP
2 - RETURN TUBE
3 - WATER PLENUM
4 - PRIMARY THERMOSTAT
5 - TRANSMISSION
6 - INTERNAL TRANSMISSION COOLER
7 - COMBINATION COOLER
8 - RADIATOR
9 - SECONDARY THERMOSTAT
10 - CYLINDER BLOCK
11 - CYLINDER HEAD
12 - HEATER CORE

The primary purpose of a cooling system is to maintain engine temperature in a range that will provide satisfactory engine performance and emission levels under all expected driving conditions.

Fig 2: Cooling System Flow - 3.6L Phoenix

Courtesy of CHRYSLER GROUP, LLC

COOLING SYSTEM FLOW - 3.6L

1 - RADIATOR
2 - RH CYLINDER HEAD
3 - THERMOSTAT
4 - WATER CROSSOVER
5 - LH CYLINDER HEAD
6 - REAR HEATER CORE
7 - FRONT HEATER CORE
8 - OIL COOLER
9 - WATER PUMP
10 - CYLINDER BLOCK

The cooling system also provides hot water (coolant) for heater performance.