Why is my heater control valve not working?
Depending on the amount of vacuum, the vacuum motor will close off the flow of engine coolant fully or partially. However, even if the heater control supplies vacuum the mechanical portion of the valve can fail, preventing the heater control valve from closing.
What to do if your heater control valve breaks?
On a cable operated system, the cable can break or detach from the control levers, leaving the valve in the fully open position. Adjust the heat to the full on position with the engine at operating temperature. Then check the temperature of the hose on the inlet and outlet sides of the heater control valve.
How does a cable operated heater control valve work?
A cable-operated heater control valve uses a Bowden cable to drive a flap located inside the valve. As the occupant manually moves a lever in the control panel, the cable moves a flap in the valve. The vacuum valve does the same thing with a pintle and diaphragm, except this type of valve is normally open.
How to check the temperature of a heater control valve?
Then check the temperature of the hose on the inlet and outlet sides of the heater control valve. The inlet and outlet hoses should be the same temperature. If the inlet side is warmer than the outlet side, the valve isn’t opening or opening fully. Remove the vacuum line from the vacuum motor and check for engine vacuum.
Why is my Pontiac Torrent air not switching?
Pontiac Torrent: 2006 Pontiac Torrent, Air not switching from… 2006 Pontiac Torrent, Air not… Hi, this is usually caused by a bad blend door actuator, id it stuck on HOT or COLD? It is stuck on cold. What the heck is what you said and could we change it, like we did the starter?
How many miles does a 2006 Pontiac Torrent have?
180,000 purchased used in 2006 with 15,000 miles on it, the dealership is out of business now, the other dealership close to us charges us $100 just to bring it in the door and plug it up to the computer. I have had problems with them before and am not very trusting of their work.
When does a Pontiac Torrent need to be repaired?
If this condition occurs on your 2006 model year Chevrolet Equinox or Pontiac Torrent within 10 years of the date your vehicle was originally placed in service or 120,000 miles (193,000 km), whichever occurs first, the condition will be repaired for you at no charge .
What happens to the heater when the 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, p… Read More A failing heater core may cause the car’s interior to smell like engine coolant. The smell will become worse when the heater is turned on.