Posts Tagged: heater core clogged

No Heat in Car? Why Your Car Heater Blows Cold

The Most Common Reasons There’s No Heat in Your Car Quick Summary Your car’s heater is blowing cold air. Here are the most common causes: Low coolant level — Check the coolant reservoir level. Stuck Open Thermostat — The engine temp should be in the middle of the range. If it’s lower, suspect a bad thermostat. Clogged Heater Core — A clogged heater core reduces coolant flow and heat transfer Failed Blend Door Actuator or blend door — The blend door controls cabin temperature. If the door can’t move properly, … Read More