Water Pump: Description and Operation
WATER PUMPDESCRIPTION
Fig. 41 Water Pump - 3.8L Engine:
The water pump has a die-cast aluminum body and a plastic impeller. It bolts directly to the timing chain case cover, using a rubber seal for sealing (Fig. 41). It is driven by the accessory drive belt.
OPERATION
The water pump is used to circulate coolant through the cooling system. The coolant is pumped through the engine block, cylinder head, heater core, EGR cooler, cabin heater, and radiator.