Where is the heater core located in a car?

The heater core is similar to the radiator located in the vehicle’s cooling system. The blower motor forces air through the core and into the air duct system allowing temperature controls which enable defrost floor and front vent modes.

What causes a heater core to become corroded?

The blower motor forces air through the core and into the air duct system allowing temperature controls which enable defrost floor and front vent modes. The most common cause of heater core problems is neglect, cooling systems need to be serviced on a regular basis, coolant can become corrosive and will cause deterioration of the core.

Do you need to remove the glove box when replacing a heater core?

Use caution when installing the heater core, these units are made of thin metal and plastic and are easily broken. Use a digital camera/phone to take pictures during the dis-assembly process, this will aid in reassembly if things get complicated. The glove box will need to be removed in most cases to allow access.

What’s the best way to replace a heater core?

Step 15 – Once removed, pull back gently on the plenum assembly while keeping an eye out for anything that was missed such as ductwork, once its released, remove it from the vehicle. Pay close attention while removing parts so they can be reinstalled correctly.

Where is the heater control valve located in a firewall?

The second problem is with the heater control valve. The heater control valve is vacuum operated and located at the back of engine near the firewall. There is a vacuum line which goes from the valve to a vacuum connection at the firewall where the heater hose connections penetrate the firewall.

Use caution when installing the heater core, these units are made of thin metal and plastic and are easily broken. Use a digital camera/phone to take pictures during the dis-assembly process, this will aid in reassembly if things get complicated. The glove box will need to be removed in most cases to allow access.

Step 15 – Once removed, pull back gently on the plenum assembly while keeping an eye out for anything that was missed such as ductwork, once its released, remove it from the vehicle. Pay close attention while removing parts so they can be reinstalled correctly.

The heater core is similar to the radiator located in the vehicle’s cooling system. The blower motor forces air through the core and into the air duct system allowing temperature controls which enable defrost floor and front vent modes.