Heater Water Pump

HEATER WATER PUMP





The heater water pump is located on the back side of the engine. The pump is rubber mounted to the engine block and is in series with the heater core inlet hose. The purpose of the pump is to increase the flow of engine coolant through the heater core, and to prevent coolant boil over after engine shutdown, by cycling coolant through the system when the engine is turned off. This water pump runs whenever the ignition is turned on under high ambient conditions. At ignition off, the pusher and puller fans run in series (6 volts each) along the heater water pump for several minutes. The heater water pump and mounting bracket are serviced as an assembly.