Table of Contents
Where is the heating control valve located?
Heater Control Valve Location The heater control valve is typically in line with the heater core’s inlet hose, which is often near the vehicle’s firewall, but the exact location of the valve will vary by vehicle.
How do I know if my heater control valve is working?
Pinch off the hose on the outlet side of the heater control valve (the hose closest to the firewall) and drive the vehicle at highway speeds. If the blower stops blowing hot air, you’ve found the problem. And, if the air conditioning runs colder with the hose clamped off, the valve is causing the problem.
Can a heater control valve cause no heat?
You wouldn’t want your cold AC air to pass through a hot heater core before it enters the passenger compartment, so this heater control valve regulates coolant flow into the heater core. If this valve has an issue, it can cause no heat or AC that doesn’t cool enough.
What controls the heater control valve?
The heater control valve (sometimes called the hot water valve) is used to control the rate at which coolant flows through the heater core. The valve is located on the heater inlet hose. Manually operated systems may use a cable, a vacuum motor or an electric solenoid to operate the valve.
Can I bypass my heater control valve?
Heater control valve bypass is not standard on vehicles; it is a modification. When bypass hoses are installed, the coolant in your car will always be circulating through the heater core – that means that if the core starts leaking, you won’t be able to turn it off.
Can you bypass heater control valve?
What would happen if the heater control valve was stuck closed?
Heater Control Valve Stuck Some vehicles use a heater control valve that only opens (allowing hot coolant to flow through the heater core) when the heater control calls for hot air. The heater will fail to produce warm air if the control valve is stuck closed, leaking or disconnected from the heater control.
Can a stuck heater control valve cause overheating?
If the heater control valve fails or gets stuck, it will not be able to allow hot coolant into the heater core so that the heater can operate. If the heater does not have hot coolant the AC system will not be able to blow hot air, and the front defroster may not work.
How much does it cost to replace coolant bypass valve?
Heater Control Valve Replacement Cost – RepairPal Estimate. Labor costs are estimated between $83 and $105 while parts are priced at $97. This range does not include taxes and fees, and does not factor in your specific vehicle or unique location.
Where is the heater control valve located on a car?
The heater control valve is typically in line with the heater core’s inlet hose, which is often near the vehicle’s firewall, but the exact location of the valve will vary by vehicle. To determine the location of your car’s valve (if it has one), it’s a good idea to consult a repair manual or repair database.
Is the heater control valve normally open or closed?
Depending on the system design, the heater control valve may be normally closed (blocking coolant flow until activated) or normally open (allowing coolant flow until activated). Some heater control valves are operated via a cable or engine vacuum, while others are electronically controlled.
How do I know if my heater control valve is bad?
Perform a visual inspection of the valve by looking for leaks and other obvious signs of damage. The heater control valve is typically in line with the heater core’s inlet hose, which is often near the vehicle’s firewall, but the exact location of the valve will vary by vehicle.