SOURCE: 2006 crown victoria - no heat
I would change the thermostat in the vehicle first and go from there. Hope this helps......Dan
SOURCE: 2004 Ford Crown Victoria no air flow through main air vents
Chances are the electronic/digital HVAC control unit is bad. This same problem happened to me and I had to replace the entire unit. The dealer wanted to charge $800 for just the part! After I freaked out on them, they found a used one for less than half. Sorry, but there's no easy fix here.
SOURCE: Blower for AC/Heater stopped working
hi
my heater blower has stopped working all together i have checked all the fuses but do not no where the relays are for the heater.
SOURCE: AC blows only thru the deforst
The switch for the changing from one to the other might be broke.
SOURCE: All of a sudden, my 2004 Ford Taurus heater
The valve (called the heater tap) which controls the hot water flow works from engine vacuum. The climate control unit turns vacuum on to close the valve and turns vacuum off to open it, if the vacuum tubing or vacuum service valve has failed, the tap will be open allowing hot water to flow. The same result applies if the heater valve itself has failed (which they do --regularly) Trace the water hoses from the enginebay firewall under the hood and you should find the valve. Check for cavuum at the valve with the climate control set to its coldest setting. If you have vacuum at the valve, replace the valve. No vacuum points to the loss of vacuum source or a faulty vacuum service valve with will be electrically operated from the climate control. Trace the vacuum hose from the heater valve back to the vacuum service valve and check if the valve has vacuum supplied to it. No vacuum means a vacuum hose has blocked, has a hole in it or has been removed from the manifold. If the electrical valve has vacuum, check for power. If power is present but still no vacuum at the heater tap, replace the service valve. If power missing, check fuses. If both wires to the valve show power present, have the climate controll unit checked by a professional..
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