Rick's Free Auto Repair Advice

Posts Tagged: heater core

What is a heater core?

How does a heater core work and what makes it fail? A heater core is nothing more than a small radiator located in the cabin of your vehicle. As your engine runs, the water pump pull in cold coolant from the bottom of the radiator at the front of your car and forces it through your engine from the bottom up. The coolant absorbs engine heat and flows out the top of the engine into the heater core under your dash. There, a blower fan blows cabin air across the … Read More


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