Question about 1998 Ford Expedition

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No heat only air - 1998 Ford Expedition

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There is a valve operated by cable linkage at the heater hoses - perhaps disconnected or linkage is kinked. Check your dash dial knob to see if it is stripped. If it is a lever it may be a bent link cable. If vaccuum operated air flow diverter flap, it may be a vacuum tube is off, listen under the dash at the heater core area for small hiss of leaking air while engine is running. Other possibilities are too much stop leak blocking the heater core or not enough water in the radiator to circulate properly. make sure the radiator is full of antifreeze and not just the overflow bottle. Never open a radiator while engine is hot, you might get burned.

Posted on Oct 05, 2010

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