SOURCE: heater is blowing but its cold air not hot air 2000 expedition
Make sure the heater core is in the open position by using the shut off valve and turning it to open. next, you may have a malfunction in the direction door the directs the air flow in the dash. a lever may have become lose or separated. may be a bad servo motor not directing the door to move to the heater position. i would start by checking that shut off valve first on the heater core.
SOURCE: 2006 crown victoria - no heat
I would change the thermostat in the vehicle first and go from there. Hope this helps......Dan
SOURCE: my heating has gone on my ford focus 1999 no heat hot or cold ?
see owners manual in glove box for fuse location!
SOURCE: 1996 crown victoria has no heat
i think it is the heater control valve i think it is mounted on the firewall by the top close to the hood it will have two black 5/8 hoses attached to it check and make sure it still has the cable attached to it before you replace
good luck here is the (how to) for your car
The heater control valve (sometimes called the water flow valve)controls the flow of coolant into the heater core from the engine.
Heater control valves are operated in three basic ways: by cable,thermostat, or vacuum. Cable-operated valves are controlled directlyfrom the heater control lever on the dashboard.
Cable-operated heater valve used to control the flow of water or coolant through the heater core.Thermostatically controlled valves feature a liquid-filled capillarytube located in the discharge air stream off the heater core thatsenses air temperature and modulates the flow of water to maintain aconstant temperature regardless of engine speed or temperature. Mostheater valves utilized on today's car are vacuum operated. These valvesare normally located in the heater hose line or mounted directly in theengine block.
To replace a heater control valve:
CAUTION
Identify the heater control valve carefully. It is easily confused with other parts.
SOURCE: HOT & COLD ELECTRIC VENTS NOT MOVING.
Blend door actuator. When it fails for some reason it turns to the hot side and gets stuck. Dash must come out. I usually do it in 3 hours, because I've done it numerous times.
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