Heater blows cold air
Either the temperature blending door is stuck, the temperature control cable came loose from an anchor at the endof the cable jacket, or there is an air bubble in the heater core or heater core is clogged. Is the coolant mix adequate for your climate?
with the engine warm and running, are both heater hoses warm? If not, there is no flow. In one extreme case with one of my own vehicles I installed items that are called flushing tees in both hoses to purge the air out. Matk one hose on both side of the cut to distinguish it from the other, and check the ability of the heater core to allow coolant to glow through it. If you are above freezing, water from a garden hose is fine at low pressure. Otherwise you need to use regulated compressed air. If no flow- the problem was a clogged heater core replace core.
If heater core had decent flow thtough it, install one flushing tee per side- ideally in the middle of the hose so each can be held up to collect air from the bubble. With engine cold, start the engine with both tees capped. The one hose that leads off the water pump- crack open first tee until coolant flows. snug cap reasonably tightly. Then crack open the other tee, hold it as high as the hose will allow until coolant begins to flow. then snug cap.
At this point you should have heat if the control cables were all anchored, and doors/actuators opened and closed them correctly.
Jan 04, 2012 |
Ford Taurus Cars & Trucks