Rick's Free Auto Repair Advice

Posts Tagged: heater core failure

Heater core failure

What are the symptoms of heater core failure? A heater core is a small radiator heat exchanger that sits under your dash and heats cabin air. If you neglect proper cooling system maintenance you can experience heater core failure. A heater core can fail in several ways: • The tiny passages become plugged with corrosive materials that prevent the flow of coolant and the transfer of heat • The tubes corrode and leak coolant into the heater box assembly under your dash. When that happens you’ll can see an oily … Read More


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