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Heater blowing cold but car not overheating?
faulty control valve on heater or air in the lines
Why is your car defrosting on the inside and coolant leaking on the passenger side?
the heater core, heater core hoses or heater control valve is leaking
How does the heater control valve operate?
It partly depends upon what sort of heater it is, but if it's a car heater, the valve alters the amount of hot water (from the car's cooling system) entering the heater matrix. This would also be true of a water-filled central heating system.
Where are the heater control valve and the bleeder valve in a 94 Cadillac deVille?
a "t" in the hoses at the rear, top of the engine has a restrictor built into it no "valve" and no bleeder on this car.
Why your heater in 98 Lincoln town car only blow cold air?
Could be the Climate Control Unit or Clogged heater core.
How do you replace a heater core in a 91 Lincoln Town Car?
heater coil on a linclon town car 2002
Why is your car heater blowing cold air 2008 jeep 4 d?
Check for a thermostat that is stuck open. Also can be a clogged heater core, or defective heater temperture control valve.
Core how to replace a heater core in a 97 Lincoln town car?
How to replace heater core in a 97 Lincoln Town Car
Fiesta 1.8 TDi 2000 the heater does not work and I am suspicious that either the electrinic control or the electric control valve is not working and ask how the components can be checked?
If your not getting any hot air in the car it will be the control valve, its about 28 quid. very common failure
How do you re-place heater core for 1984 Lincoln town car?
how do u re-place a heater core for a 1984 Lincoln town car
Your heater control valve is not switching on your 1985 corvette?
For a car as old as a 1985 model, it could be that the heater blower motor control module has gone out. A new one for a 1985 Corvette is around $165 to $175 at auto parts stores.
How does a heater control valve work in a car?
A heater control valve is simply a water valve which allows more or less water to circulate through the heater core, depending on how much the valve is opened. When the engine warms up it heats coolant (mostly water) in the water jacket of the engine. To keep the engine from overheating, the water pump circulates water through the radiator once the engine temperature reaches the set-point of the thermostat. When it's cold outside the engine STILL reaches a temperature that allows you to make use of the engine heat when you open the water valve of the heater. Heater control valves take many forms but basically they all do the same thing; they open to allow heated engine coolant to circulate through the heater core or they close to stop the coolant from flowing. Heater control valves can be manual (cable controlled or even lever controlled), vacuum (which allows the engine vacuum to control the position of the heater control valve based on where you set the control knob) or electrical which allows for greater flexibility and even allows the auto manufacturer to connect the heater controls to a computer or other electronic control device.
