What to know about the Water Pump (Auxiliary):
When most people discover the term “water pump”, their quick thought is the pump that propels engine coolant through the engine, keeping it within optimum operating temperature. While that is surely the most essential one, there’s actually another pump on your car in some models and makes (not all cars have an auxiliary pump).
The auxiliary water regulates temperature on the car’s inside during cold days. It’s accountable for sending additional hot coolant through the car’s heater core, permit you to work the heater (your car’s heater uses engine heat to warm the air that’s blown out of the vents). They were first used in the 1980s on diesel vehicles, but since then have seen adoption on gasoline engines as well.
Facts to Note:
The auxiliary water pump is an electronic device, which, unlike the primary water pump that is activated by the drive belt, uses an electric motor to pump coolant. Over time, these pumps do wear out and will need to be changed.
How to Fix:
The vehicle is raised and supported on jack stands and the coolant is drained
The water pump hoses are disconnected and the pump is detached
The new water pump is fixed and the hoses are linked
The coolant is filled and the water pump and hoses are checked for leaks
The vehicle is removed from the jack stands and the engine is examine for correct operation. The vehicle is road tested for proper operation
READ ALSO: WHAT IS TIMING COVER REPLACEMENT IN CARS
Your best guard against a failed auxiliary water pump is to work with your expert mechanics that understand that these pumps are becoming more common, and can account for the pump’s presence when analyzing heater problems. Note that auxiliary water pump failure will not affect the blower motor or the air conditioner operation – it only affects the production of heat, and these signs can range from creating mildly warm air to the heater blowing cold air.
Common symptoms indicating you may need to change the Water Pump (Auxiliary):
Heater does not create much warm air in stop-and-go traffic
Heater does not release any warm air
Importance of this service:
While changing a failed auxiliary water pump is not critical for vehicle performance, it can be an inconvenience, particularly during the middle of winter if your heater can’t keep you warm. Your heater may also have trouble keeping your windows clear on humid and cold days. If you observe your car’s heater is not functioning correctly, have it inspected by one of your expert mechanics.