Cooling System: Description and Operation
COOLINGDESCRIPTION
3.7L ENGINE
The cooling system consists of the following items:
- 2 Speed electric cooling fan - Standard.
- 2 Speed electric cooling fan and mechanical engine fan with viscous clutch - Heavy duty cooling only
- Radiator
- Thermostat
- Combined coolant pressure bottle/overflow system with pressure cap
- Combination A/C/transmission oil cooler (if equipped with an automatic transmission)
- Coolant
- Water pump
- Hoses and hose clamps
COOLING SYSTEM ROUTING - 3.7L ENGINE:
OPERATION
The cooling system regulates engine operating temperature. It allows the engine to reach normal operating temperature as quickly as possible. It also maintains normal operating temperature and prevents overheating.
The cooling system also provides a means of heating the passenger compartment. The cooling system is pressurized and uses a centrifugal water pump to circulate coolant throughout the system.
HOSE CLAMPS
The cooling system utilizes spring type hose clamps. If a spring type clamp replacement is necessary, replace with the original Mopar equipment spring type clamp.
WARNING: CONSTANT TENSION HOSE CLAMPS ARE USED ON MOST COOLING SYSTEM HOSES. WHEN REMOVING OR INSTALLING, USE ONLY TOOLS DESIGNED FOR SERVICING THIS TYPE OF CLAMP, SUCH AS SPECIAL CLAMP TOOL NUMBER 6094. ALWAYS WEAR SAFETY GLASSES WHEN SERVICING CONSTANT TENSION CLAMPS.
CAUTION: A number or letter is stamped into the tongue (1) of constant tension clamps. If replacement is necessary, use only a original equipment clamp with matching number or letter.
The spring type hose clamp applies constant tension on a hose connection. To remove a spring type hose clamp, only use constant tension clamp pliers designed to compress the hose clamp.