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Why cant the air flow on the car heater be changed when the control knob is changed?
1. Check the vacuum line. Is it broken or disconnected?
2. Look under the hood
3. Look near/around the battery, windshield wiper fluid tank.
4. Check for a bundle of wires that go to the firewall.
Some lines (3mm diameter) that are either black or purple are vacuum lines.
P.s. This vacuum line is controlling the air flow mode switch (on the dashboard). After you fix this vacuum line, you can control the airflow correctly via the mode switch.
What else can I help you with?
Where is the heater control valve on a 2000 Chevy Blazer and what does it look like?
this model does not have a heater control valve, it has a specail thermostat that controls flow.
Where is the heater control valve on a 1998 ford expedition with a 4.6L engine?
Heat control is by air flow control doors in the a/c and heater box. There is no water valve.
What does the heater control valve do and can it prevent water flow to the heater core if it has gone bad on a 1994 B-2300?
Ok, I got the answer to this question. It seems that there is not a heater control valve in the heater hose line.
Where do you find the heater control valve in a 1990 Corsica?
There is not one. The Heater core has Full flow all the time.
In a 1998 Subaru outback the heater blower works but no warm air?
In Subarus the temp control for the heater does not control the coolant flow, just airflow past the heater core. If you get no heat, there is no coolant in the heater core -- either there is no coolant or it is not circulating.
Where is the heater control valve in 2005 Chrysler Pacifica located?
If you are looking for a valve in the heater hoses that restricts coolant flow, it does not have one.
Car heater only blow hot?
The best bet is that the valve that controls the flow of water to the heater core is not functioning, but on some cars it's the flaps that control the air flow through the core.
Why won't heater control change on 1987 Chevy Celebrity?
The most likely reason that the heater control won't change the air flow is that the cable that moves the diverter valve has broken and will need to be replaced.
What is the function of the gas hot water heater control valve and how does it regulate the flow of gas in the system?
The gas hot water heater control valve regulates the flow of gas in the system to control the temperature of the water. It opens and closes to allow more or less gas to enter the burner, which in turn heats the water to the desired temperature.
Where is the heater core valve on a 1997 chrysler cirrus?
It does not have a water flow valve in the heater plumbing.It does not have a water flow valve in the heater plumbing.
Where is the heater control valve in a 1986 Olds 98 Regency Brougham 3.8 with auto temp control?
It is at the rear of the intake manifold, follow the heater hose. there is a flow door under the dashboard with a cable connected is that the control or does the valve body at end of intake still control it?
Heater does not work in Cherokee?
The Grand Cherokee is notorious for failures of the air flow control. However the Cherokee has the same basic problem. The blend door has a tendency to break, killing control over air flow through the heater core. The fix is fairly simple with the kit from HeaterTreater. Check the product at heatertreater.net.
