Question about 2003 Mercury Sable

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2003 sable heater not working

Has been checked over, everything is suppose to be working properly just cannot get warm air just cold air
it's been blown out
thermostat is just fine no leaks
circulates just fine

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  • Grace Gloria Dec 15, 2008

    thanks, i'll try this....

  • DoubleJ999 Feb 10, 2009

    Hi All,
    I tried this as suggested. It would seem my blend doors are not opening. I popped open the glove box and saw what looked like ducting and a housing that probably held the doors. Before I just tore into it, as it looks time consuming and difficult, is there a way to 'unstick' the doors without tearing it apart? TY!

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Warm up vehicle. Then, from the engine compartment, grip each heater hose to check if they are HOT. Not warm HOT. If they are both hot, then the BLEND DOOR is stuck to the cold position. Access this thru glove box area.

If they are not HOT, then check radiator hoses for proper heat. If radiator hoses are not HOT then thermostat is stuck OPEN.

If they are HOT then there may be a restriction in circulation to the heater hoses and heater core.

Posted on Dec 15, 2008

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