How do you replace a heater control valve?
The heater control valve is separated from the heater core hoses and control mechanism, which could be a vacuum line or a cable. Then the valve is removed from the firewall, and replaced. Installation is the reverse of removal, and some adjustment may be necessary if you’re dealing with a cable-type controller.
Why is my heater control valve leaking coolant?
Over time the heater control valve can wear out and crack, which will cause coolant to leak from the valve. Heater control valves can also leak from excessive corrosion from contact with old or contaminated engine coolant. Usually a leaking control valve will have to be replaced in order to repair the leak.
Where is the heater control valve located on a car?
The heater control valve is a cooling and hvac system component that is commonly found on many road going cars and trucks. The heater control valve is typically mounted near the firewall, and acts as the valve that allows coolant to flow from the engine to the heater core, which is located inside of the vehicle.
What happens when a heater control valve fails?
When the heater control valve fails, adjusting the temperature may not change the air temperature at the vents, whether hot or cold. Also, the valve could leak engine coolant, possibly causing the vehicle to overheat. Can I drive with a heater control valve problem?
What’s the best way to replace a heater control valve?
Step 13: Refill the cooling system. Use a 50/50 mixture of antifreeze and distilled or demineralized water to refill the cooling system. Step 14: Bleed all the air out. To get all the air out of the cooling system, you will need to start the vehicle, turn the heater on high, and allow the vehicle to achieve normal operating temperature.
Where is the heater control valve on a Chevy Astro?
The heater control valve exists in a part of the system after the engine, but before the radiator so the coolant in this part of the system has been heated when it arrives to the valve. Once the valve is activated, the heated coolant can flow into the passenger compartment and fill the heater core.
How does the heater control valve work in a car?
The heater control valve is part of the vehicle’s cooling system as coolant does flow through this valve. Engine operation generates a lot of heat and this heat gets transferred from the engine assembly to the liquid coolant in the cooling system to be cooled by air flowing across the radiator.
How do you remove a lower radiator hose?
Remove the lower radiator hose from the radiator by first loosening the clamp and then gently but firmly twisting the hose to ensure that it is not stuck on. Tip: Oftentimes the hose will stick as if it is glued in place. By twisting, you can break this bond and make it much easier to remove.